5-Year Impact Factor: 1.225 (@Thomson Reuters)
Impact Factor 2016: 0.925 (@Thomson Reuters)
  • Users Online: 319
  • Print this page
  • Email this page

Table of Contents
Year : 2018  |  Volume : 11  |  Issue : 2  |  Page : 116-122

Antidiabetic effects of galactomannans from Adenanthera pavonina L. in streptozotocin-induced diabetic mice

1 Technological Development Park (PADETEC), Federal University of Ceará, Pici Campus, 60455-970, Fortaleza, Ceará, Brazil
2 Department of Health and Nutrition, State University of Ceará, Av. Dr. Silas Munguba 1700, Itaperi campus, 60714-903, Fortaleza, Ceará, Brazil

Date of Submission12-Sep-2017
Date of Acceptance18-Dec-2017
Date of Web Publication14-Feb-2018

Correspondence Address:
Stephen Rathinaraj Benjamin
Department of Health and Nutrition, State University of Ceará, Itaperi campus, 60714-903, Fortaleza, CE
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1995-7645.225018

Get Permissions


Objective: To evaluate the antidiabetic effect of galactomannans extracted from Adenanthera pavonina's L. seeds (GAP) in streptozotocin (STZ) induced diabetic mice. Methods: The preliminary galactomannan yield from Adenanthera pavonina L. plant and extraction products composition were evaluated. Various chemical characterization methods like thin layer chromatography, Fourier transform infrared spectroscopy, 1H and 13C nuclear magnetic resonance, and molecular weight by gel permeation chromatography have been employed to characterize the extracted galactomannan. The mice were divided in four groups: Normal control, diabetic control, GAP (1% and 2%) treated and standard drug treated groups. Diabetic mice received treatment daily for 30 d. Diabetes was induced by STZ at a single dose of 120 mg/kg. Body weight, water and food intake, fasting blood glucose, total cholesterol and triglycerides were measured. Histopathological analysis of pancreas and liver were performed to evaluate STZ-induced tissue injuries. Results: The isolated and extracted galactomannan from Adenanthera pavonina was confirmed by various chemical characterization methods. GAP exhibited a 1.46:1 mannose: galactose ratio, and high molar weight. Both GAP enriched food decreased glycaemia, total cholesterol and triacylglycerol. GAP didn't interfere on food intakes or body weight, although it increased water intake. Furthermore, the relative liver weight indicated toxic galactomannan effects on the histopathological changes of the pancreas in STZ induced diabetes. Conclusions: It is concluded that GAP is a natural product that contains potent galactomannan and is useful in preventing and treating diabetes.

Keywords: Adenanthera pavonina, Galactomannans, Diabetes, Glycaemia, Total cholesterol, Triacylglycerol

How to cite this article:
Pinto Vieira IG, Mendes FN, da Silva SC, Paim RT, da Silva BB, Benjamin SR, Florean EP, Florindo Guedes MI. Antidiabetic effects of galactomannans from Adenanthera pavonina L. in streptozotocin-induced diabetic mice. Asian Pac J Trop Med 2018;11:116-22

How to cite this URL:
Pinto Vieira IG, Mendes FN, da Silva SC, Paim RT, da Silva BB, Benjamin SR, Florean EP, Florindo Guedes MI. Antidiabetic effects of galactomannans from Adenanthera pavonina L. in streptozotocin-induced diabetic mice. Asian Pac J Trop Med [serial online] 2018 [cited 2018 Mar 21];11:116-22. Available from: http://www.apjtm.org/text.asp?2018/11/2/116/225018

Foundation project: This study was support by Brazilian governmental agency FUNCAP (Ceará State Research Funding)

  1. Introduction Top

Diabetes mellitus (DM) is a chronic disease associated with metabolic dysfunction, generally followed by severe complications, which results in loss of life quality and premature mortality[1]. Hyperglycemia is the main DM symptom, and is responsible for tissue damage and vascular complications, which limits professional performance in diverse degrees and generats a social cost beyond the just of the outpatient. In 2015, according to the International Diabetes Federation, the diabetic population was 415 million people worldwide, with a prospect of increasing to 642 million by the year 2040.

Therapeutic treatments include commercial insulin and oral hypoglycemic that help to control the patients glycaemia, however physical activity and healthy nourishment are important to their life quality. Among the nutrients highly relevant for the treatment of DM, dietary fibers, especially soluble fibers, stand out and represent an important part of a healthy diet because of their action in increasing peripheral insulin sensitivity and reducing blood lipid levels[2].

Galactomannans are soluble fibres, commonly found in the seeds of Fabaceae, although they may be obtained from other plants and fungi[3]. Their dietary consumption has hypoglycemic and hypocholesterolemic potential.

Adenanthera pavonina (A. pavonina) (Fabaceae family, subfamily Mimosoideae, known as dragon's eye) seeds are a promising source for galactomannans in Brazil, because, in addition to its richness in this polysaccharide[4], this plant is well adapted to Brazilian cultivation conditions[5]. Beacause of their chemical structures silmilar to galactomannans used in glycemic and metabolic DM control – guar gum and fenugreek[6], galactomannans from A. pavonina have potential to serve as a soluble fibre supplement for diabetic patients.

The objective of this study was to characterize and evaluate the effect of galactomannans extracted from A. pavonina's L. seeds (GAP) on diabetic mice's glycaemia.

  2. Materials and methods Top

2.1. Drugs and chemicals

Streptozotocin (STZ) was supplied by Sigma, Co (St Louis, MO, USA). Metformin hydrochloride was purchased from Medley Pharmaceutical, Co (Campinas, SP, Brazil). Total cholesterol (TC) and triacylglycerol (TAG) were determined by an enzymatic and colorimetric method using a commercial kit (Bioclin, Belo Horizonte, MG, Brazil). All other reagents of analytical grade were purchased locally.

2.2. Isolation and purification of galactomannans

A. pavonina seeds were collected in Fortaleza/Ceará/Brazil between September to October in 2014. The identification of the botanical species was performed by Herbarium Prisco Bezerra of the Federal University of Ceará, and deposited under number 56964. The isolation procedure of galactomannans from the seeds of A. pavonina was performed according to Vieira et al[7]. Initially, 150 g (seeds) were boiled in 500 mL distilled water for 2 h. After 12 h resting at 24 °C, the endosperm was removed and lyophilized. For galactomannan's extraction, 2.5 g of the lyophilized endosperm were submitted to four consecutive extractions with water. At each extraction, 100 mL of distilled water at 80°C for 4 h was used. After this procedure, the aqueous extract was vacuum-filtered with polyester net. The material retained in the net was submitted again to the extraction process repeatedly until the galactomannans were fully extracted. At the end of the aqueous extractions, the material obtained was filtered through a celite layer, frozen and lyophilized.

2.3. Moisture, ash, protein and carbohydrate content

Moisture and ash content were determined according to methods described by Instituto Adolfo Lutz (2008)[8]. Total carbohydrate content was quantified using the method reported by DuBois, Gilles, Hamilton, Rebers, & Smith (1956)[9] and protein content was determined according to Bradford (1976)[10].

2.4. Molar weight estimation through gel permeation chromatography

Gel permeation chromatography was performed in a SHIMADZU LC-10AD chromatograph with refraction index detector RID-10A at 40 °C. A linear type ultrahydrogel 250 column (waters) with 7.8 mm × 300 mm was used, with a mobile phase of sodium nitrate solution (0.1 mol/L), and a flow rate 0.5 mL/min, a sample volume of 20 μL ran through the column. GAP sample was solubilized in 1.0 mL deionized water, resulting in a 1 mg/mL solution that was then filtered in a 0.45 μm Millipore® membrane. Pullulan (Shodex Denko®) samples of molecular weight (Mw) 5.90 × 103 g/mol, 4.73× 104 g/mol , 1.12 × 105 g/mol, 4.04 × 105 g/mol and 7.88 × 105 g/ mol were used as molecular standard[11].

2.5. GAP monosaccharide content

GAP monosaccharide content was determined through its hydrolysis[12], followed by thin layer chromatography (TLC) analysis. In a silica gel 60 TLC chromatoplate, 4 μL of mannose and galactose standard solutions and hydrolyzed galactomannans at 10 mg/mL were applied. After elution with an acetic acid glacial, chloroform: Water as mobile phase (74:65:11 v/v), the plate was dried at 100 °C for 2 min and pulverized with orcinol-sulfuric acid spray reagent for detection.

2.6. Nuclear magnetic resonance (NMR) (1H-NMR) and mannose: Galactose ratio determination

GAP sample (20 mg/mL) was dissolved in deuterium oxide (D2O) and the solution was put in a 5 mm NMR tube at 85 °C under constant agitation. Proton resonance spectra were obtained in an Avance DRX-500 Bruker Spectrometers® operating in the hydrogen frequency, at 500 MHz. The spectra were registered at 85 °C, and for its acquisition, 5 s relaxation periods and 30 pulse sequences were used[13].

2.7. Fourier transformation infrared absorption

The infrared spectra were obtained in a Perkin-Elmer 1320 Spectrometers®, with wavelengths of 400 cm-1 to 4 000 cm-1. The GAP sample was analysed in KBr pellets[13].

2.8. Experimental animals

Fifty female Swiss mice (25 g – 30 g with ages ranging from 8 wk – 12 wk) were kept at ± 22 °C, with 12/12 light/dark cycle[14]. All animals were kept in Polyacrylic cages and received water and food ad libitum. The experimental procedure performed on animals was in accordance with the policy of the Institutional Animal Ethical Committee of the State University of Ceará (UECE) (No. 0874146/2015.).

2.9. Diabetes induction

Diabetes was induced with an intraperitoneal injection of 120 mg/ kg of STZ (Sigma®) in aqueous solution, at 24 mg/mL. After 7d, diabetes was confirmed by measuring the serum glucose level. Only mice whose post-induction glycaemia was above 200 mg/dL were considered diabetic[15].

2.10. Experimental design

Animals were distributed into five groups (n=10): NC group – normal control (healthy mice); DC Group – Diabetic control (diabetic mice); GAP 1% group – diabetic mice and treated with 1% GAP enriched food; GAP 2% group – diabetic mice and treated with 2% GAP enriched food; MET group – diabetic mice treated with metformin® (200 mg/kg).

2.11. Food preparation

The standard animal food used was from Presence Animal Nutrition®, purchased at a local market. Standard food presents 13% moisture, 23% total protein, 4% ethereal extract, 6% fibre and 10% mineral matter content. GAP 1% and GAP 2% were produced from crushed standard food with 1% (w/w) and 2% (w/w) GAP addition, respectively. After homogenization, food with GAP added was compressed into pellets and dried at 50 °C for 48 h.

2.12. Body weight water and food ingestion

The animals had their weight measured on the day before treatment, considered as day 0, 21,and 28 of treatment. Water and food ingestion were measured weekly during the 30 d of treatment.

2.13. Biochemical parameters analysis

Blood samples were collected on day 0, 21 and 30 of the treatment for evaluation of fasting glycaemia. TC and TAG were evaluated at the end of treatment. These biochemical parameters were analysed through enzymatic and colorimetric techniques using commercial Bioclin® specific kits.

Toxicity study was performed by relative liver weight (RLW) comparisons between groups and a long time and histological cuts from the animal's pancreas and liver. After being euthanised, the animal's organs were weighed, fixed with 10% formaldehyde for 24 h and treated with microscope slides preparation according to Michanaly[16].

2.15. Statistical analysis

Data were demonstrated as a mean ± standard deviation. Analysis of variance followed by a performance of Newman-Keuls test, as a P<0.05 being significant. GraphPad Prism® 6.0 software was used in the application of tests and graphic presentation.

  3. Results Top

3.1. Isolation and characterization of galactomannan from the A. pavonina

2.14. Toxicity evaluation

The product of the extraction was a galactomannan free from insoluble fibres and with clear aspect in solution. A total of 11.00% yield of galactomannans was obtained in relation to seed total weight followed by endosperm/seed (13.83%) and GAP/ endosperm (80.10%). The galactomannans were determined and the results revealed that the moisture percentage and ash content were 13.87% and 3.20%, respectively. For macronutrients, the values were 72.290% and 0.034% for carbohydrate and proteins respectively. High carbohydrate and low protein content confirmed the high purity of the extracted material. TLC showed that GAP was constituted of mannose and galactose unities. Gel permeation chromatography analysis presented a molar weight (Mw) for GAP of 1.45 × 107 g/mol. The 1H NMR spectrum was 500 MHz, A. pavonina L. galactomannan and its anomeric region in the spectrum were shown in [Figure 1]. The resonances of the anomeric protons were well separated, and their identification was self-evident from the known monomeric compositions of the samples. Through 1H NMR spectra interpretation, the M/G (D-mannose/D-galactose) ratio was calculated, resulting in a 1.46:1.00 value. By analyzing the 1H NMR spectrum of galactomannan and expansion, it could be confirmed that the galacto pyranosyl obtained A. pavonina L. signals around were related to alpha-D-galacto pyranosyl: H-1, 5.02 ppm (G1); H-2, 3.80 ppm; H-3, 3.92 ppm; H-4, 4.00 ppm; H-5,3.89 ppm, and H-6, 3.76 ppm, and the beta -D-manopyranosyl, H-1, 4.74 ppm; H-2, 4.12 ppm; H-3, 3.79 ppm; H-4, 3.89 ppm; H-5,3.54 ppm (M5), and H-6, 3.90 ppm. The IR result showed that GAPs [Figure 2] presented relative absorption bands to hydroxyl groups (3 461 cm-1), alkane groups (2 933 cm-1), C-O and C-O-H groups (1 145 and 1 043 cm-1) and D-galactopyranose unities (810 cm-1).
Figure 1: Spectra result.
A) 1H NMR (500 MHz) spectra from a 20 mg/mL solution galactomannan and B) chemical structure of galactomannans obtained from A. pavonina L. respectively.

Click here to view
Figure 2: FT-IR spectra of galactomannan obtained from A. pavonina L. (cm-1 KBr).

Click here to view

3.2. Biochemical results

Glycaemia values [Table 1] showed that after 21 treatment days, both GAP 1% and GAP 2% exhibited significant glycaemia reduction in relation to diabetic control, which was kept until the end of the experiment, on the 30th day of treatment. GAP enriched food consumption during the 30 days resulted in lower TAG plasma levels [Table 2] in mice (P<0.001), although the only GAP 2% presented lower TC levels [Table 2] compared to diabetic control (P<0.05).
Table 1: Effect of A. pavonina galactomannan-enriched food on blood total cholesterol (mg/dL), triacylglycerols (mg/dL), water (mL/animal/day) and food ingestion (g/animal/day).

Click here to view
Table 2: Effect of A. pavonina galactomannan-enriched food on fasting glycaemia of diabetic mice (mg/dL).

Click here to view

3.3. Water and feed intake

Galactomannans food enrichment didn't change the animals feeding behavior [Table 1], yet both GAP 1% and GAP 2% group had higher water intake (23.40 ± 2.56) mL/animal/d and (21.20 ± 3.69) mL/animal/d, respectively, [Table 2] significantly superior (P<0.001; P<0.01, respectively) to DC group [(14.2 ± 2.45) mL/ animal/d].

3.4. Body weight

Between diabetic groups, mice body weight [Table 3] wasn't significantly affected by GAP supplementation, however, it was seen that GAP 2% body weight was significantly similar to the NC group (P>0.05), revealing a tendency of these animals to recover the body lost due to the diabetic state. GAP 1% and GAP 2% groups presented a RLW [Table 4] higher than NC group, but similar to diabetic group (P>0.05) and inferior, to metformin, thus indicating hepatotoxicity lower than the standard drug to diabetes.
Table 3: Effect of A. pavonina galactomannan-enriched food on body weight (g).

Click here to view
Table 4: Effect of A. pavonina galactomannan-enriched food on liver weight.

Click here to view

3.5. Histopathological results

The pancreatic tissue showed no architectural alteration in the NC animals. In the DC group, there was only a slight decrease in the size of the islets with cell degeneration. In the MET group, there was a drastic reduction in the number and size of islets with evident cellular degeneration. In the GAP-1 group, discrete cell degeneration was visualised in all animals, however, only 2 animals showed an apparent decrease in the number of pancreatic islets. In the GAP-2 group, there was discrete degeneration in all animals, however, 4 animals showed an apparent decrease in the number of islets [Figure 3]. Regarding the hepatic tissue, there were no architectural changes in the animals of the NC group, however, some animals in the group exhibited hydropic degeneration that varied from mild to moderate. There were also discrete inflammatory foci consisting of lymphocytes and plasma cells [Figure 4].
Figure 3: Pancreas photomicrograph of diabetic animals treated with galactomannan enriched food.
(A): Normal control; (B): Diabetic control; (C): GAP 1%; (D): GAP 2%; (E): MET-Cell degeneration areas. HE, 200×.

Click here to view
Figure 4: Liver photomicrograph of diabetic animals treated with galactomannan enriched food.
(A): Normal control; (B): Diabetic control; (C): GAP 1%; (D): GAP 2%; (E): MET-Cell degeneration areas. HE, 200×.

Click here to view

In 13 animals from this experiment, 2 animals in the DC group, 3 in the MET group, all from the GAP-1 group and 3 in the GAP-2 group, there was neoplasia that reproduced malignant hepatocytes of severe anisocytosis, with a massive cytoplasm and nucleus with irregular contours, grossly distributed chromatin with evident nucleoli (irregular and sometimes macronuclei). There were also binucleation, the presence of atypical mitoses and multiple foci of apoptosis. Bile duct hyperplasia was also seen in 1 of GAP-1 and 1 of GAP-2 animals. The remaining liver tissue was thirsty for hydropic degeneration [Figure 4].

  4. Discussion Top

DM is chronic, and becomes the most common disease, especially in developing nations. The disease is featured for the severity of its complications, and has been considered as a public health issue regarding populace development and maturing, more prominent urbanization, the expanding pervasiveness of obesity and sedentarism, and the expanded survival rate from individuals with DM[17]. Traditional plant remedies have been used for centuries in the treatment of diabetes[18], but only a few of these plants have been scientifically evaluated by researchers[19],[20],[21]. Therefore, we have investigated the effect of galactomannans from A. pavonina L. on STZ-induced diabetic mice.

In the present study, isolated endosperm of A. pavonina L. seeds contains water-soluble galactomannan. The product extracted from A. pavonina L. seed comprises a galactomannan free of insoluble fibers in solution, and with clear appearance. The yield was 11.00% galactomannan based on the total seed weight. This value is different from the yield reported in the literature for A. pavonina -17.1%[4]. The differences in yield may be related to factors such as the source species of galactomannan, the seed source or maturation stage of the endosperm[13].

TLC shows that chemical structure of GAP is compatible with galactomannan, which has a main chain composed of mannose with ramifications formed by one unity of galactose[22]. The higher molar weight presented by GAP implies a higher interaction between polysaccharide chains, which results in increased molecular aggregation, and a decrease on intrinsic galactomannans viscosity. However GAP presents a Mw similar to guar gum – 1.3 × 107 g/mol[23], to carob gum – 1.2 × 10б g/mol and to fenugreek galactomannans – 1.4 × 106 g/mol[24]. The M/G ratio of GAP is similar to the ones found for galactomannans with known hypoglycemic activity, like fenugreek galactomannans[25], which has a 1:1 M/G ratio[26],[27], and guar gum[26] whose M/G ratio is 1.43:1 or 1.2:1[28]. Lateral galactose groups interfere in galactomannan's water solubility, as they make polysaccharide crystallisation and interchain interactions harder, to ease its water solubilization. The detection of absorption bands, 810 cm-1, in the GAPs Fourier transformation infrared absorption suggest the presence of D-galactopyranose unities[29]. And a study with A. pavonina (L.) films detected two absorption bands, 812 cm-1 and 871 cm-1, suggesting the presence of a -D-galactopyranose units and β -linked D-mannopyranose units, respectively. Glycaemia values show that both GAP 1% and GAP 2% exhibit significant glycaemia reduction in relation to diabetic control. Studies imply that concentration and viscosity contribute directly to hypoglycemic activity because it slows digestive enzymatic activity and glucose absorption in the gut[25],[30]. Galactomannans viscosity is influenced by its M/G ratio. The higher the galactose content in the molecule, the easier the water access to the molecule. Galactomannan prevents interactions with other polysaccharides and their crystallisation[3]. The lower TAG plasma levels and lower TC levels may be a reflex of animals glycaemia diminution, due to a lower intestinal glucose absorption tax. Once minor blood glucose reduces insulin excretion and consequently makes hepatic TAG and cholesterol production lower. Other studies indicate that the decrease of digestive lipases activity and high 3-hydroxy-3-methylglutaryl-CoA reductase activity, hepatic enzyme are responsible for bile acid production and neutral steroids[31], this explains the hypocholesterolemic action of galactomannans.

The weight of the organs provides information for preliminary evaluations of toxicological tests. It may indicate lesions to the systems, as we can observe, for example, elevation of liver weight due to hepatocellular hypertrophy[32]. The results of RLW indicated GAP hepatotoxicity was lower than the standard drug of diabetes, and these results were confirmed by the histological analysis of hepatic and pancreatic tissue. These changes may be justified by administration of STZ, a drug with diabetogenic properties because of its pancreatic β -cell selectivity. However, STZ induces sublethal DNA alkylation in important organs such as the liver and can promote carcinogenesis by inducing sub-lethal DNA alkylation[33]. In conclusion, our results in this study suggest that galactomannans extracted from A. pavonina L. seeds have antidiabetic activity, by regulating glycaemia and diabetic mice lipedema, not interfering with the animals food behaviour and body weight, beyond that no toxicity signals are observed. This work evidences that A. pavonina L. galactomannans have potential as a therapeutic alternative for the control and treatment of DM. For being soluble fibres, the antidiabetic effect of galactomannans may be related to intestinal glucose and lipid absorption inhibition, and is potentially involved in the reabsorption inhibition of biliary salts, but further studies are necessary to perform this analysis.

Conflict of interest statement

The authors declared that there is no conflict of interest.


The authors thank the Brazilian governmental agency FUNCAP (Ceará State Research Funding) for their financial support.

  References Top

International Diabetes Federation. IDF diabetes atlas. 7th ed. Brussels: International Diabetes Federation; 2015, p.1-140.  Back to cited text no. 1
Timm DA, Slavin JL. Dietary fiber and the relationship to chronic diseases. Am J Lifestyle Med 2008; 2(3): 233-240.  Back to cited text no. 2
Prajapati VD, Jani GK, Moradiya NG, Randeria NP, Nagar BJ, Naikwadi NN, et al. Galactomannan: A versatile biodegradable seed polysaccharide. Int J Biol Macromolec 2013; 60: 83-92.  Back to cited text no. 3
Cerqueira MA, Pinheiro AC, Souza BWS, Lima ÁMP, Ribeiro C, Miranda C, et al. Extraction, purification and characterization of galactomannans from non-traditional sources. Carbohydr Polym 2009; 75(3): 408-414.  Back to cited text no. 4
Contreiras Rodrigues APD, Oliveira AKM de, Laura VA, Yamamoto CR, Chermouth K da S, Freitas MH. Tratamentos para superação da dormência de sementes de Adenanthera pavonina L. Rev A rvore 2009; 33(4): 617-623.  Back to cited text no. 5
Fuller S, Stephens JM. Diosgenin, 4-hydroxyisoleucine, and fiber from fenugreek: Mechanisms of actions and potential effects on metabolic syndrome. Adv Nutr An Int Rev J 2015; 6(2): 189-197.  Back to cited text no. 6
Vieira ÍGP, Mendes FNP, Gallão MI, de Brito ES. NMR study of galactomannans from the seeds of mesquite tree [Prosopis juliflora (Sw) DC]. Food Chem 2006; 101(1): 70-73.  Back to cited text no. 7
Lutz IA. Métodos físicos-quimicos para análise de Alimentos. Métodos físicos-quimicos para análise Aliment. 4th ed. São paulo: Instituto Adolfo Lutz; 2008, p. 589-625.  Back to cited text no. 8
Dubois M, Gilles K, Hamilton J, Rebers P, Smith F. Colorimetric method for determination of sugars and related substances. Anal Chem 1956; 28(3): 350-356.  Back to cited text no. 9
Bradford MM. Rapid and sensitive method for quantitation of microgram quantities of protein utilizing principle of protein-dye binding. Anal Biochem 1976; 72(1-2): 248-254.  Back to cited text no. 10
Almeida RR, Magalhães HS, de Souza JRR, Trevisan MTS, Vieira ÍG., Feitosa JPA, et al. Exploring the potential of Dimorphandra gardneriana galactomannans as drug delivery systems. Ind Crops Prod 2015; 69: 284-289.  Back to cited text no. 11
Kapoor VP, Chanzy H, Taravel FR. X-ray diffraction studies on some seed galactomannans from India. Carbohydr Polym 1995; 27(3): 229-233.  Back to cited text no. 12
Mulimani VH, Prashanth SJ. Investigating plant galactomannans. Biochem Mol Biol 2002; 30(2): 101-103.  Back to cited text no. 13
Cavalli VL de LO, Sordi C, Tonini K, Grando A, Muneron T, Guigi A, et al. In vivo study of the hypoglycemiant efect of extracts from the root and leaf of the bardana Arctium minus (Hill.) Bernh. Brazilian J Pharmacogn 2007; 17(1): 64-70.  Back to cited text no. 14
Barbosa AP de O, Silveira G de O, de Menezes IAC, Rezende Neto JM, Bitencurt JLC, Estavam C dos S, et al. Antidiabetic effect of the Chrysobalanus icaco L. aqueous rxtract in rats. J Med Food 2013 ; 16(6): 538-543.  Back to cited text no. 15
Michalany J. Técnica histológica em anatomia patológica. São Paulo: Editora Michalany; 1998, p. 295.  Back to cited text no. 16
Whiting DR, Guariguata L, Weil C, Shaw J. IDF Diabetes Atlas: Global estimates of the prevalence of diabetes for 2011 and 2030. Diabetes Res Clin Pract 2011; 94(3): 311-321.  Back to cited text no. 17
Rai PK, Srivastava AK, Sharma B, Dhar P, Mishra AK, Watal G. Use of laser-induced breakdown spectroscopy for the detection of glycemic elements in Indian medicinal plants. Evid Based Complement Alternat Med 2013; 2013: 1-9.  Back to cited text no. 18
Kamble H, Kandhare AD, Bodhankar S, Mohan V, Thakurdesai P. Effect of low molecular weight galactomannans from fenugreek seeds on animal models of diabetes mellitus. Biomed Aging Pathol 2013; 3(3): 145-151.  Back to cited text no. 19
Jiang W, Gao L, Li P, Kan H, Qu J, Men L, et al. Metabonomics study of the therapeutic mechanism of fenugreek galactomannan on diabetic hyperglycemia in rats, by ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry. J Chromatogr B 2017; 15(1044–1045): 8-16.  Back to cited text no. 20
Pandhare RB, Sangameswaran B, Mohite PB, Khanage SG. Anti-hyperglycaemic and lipid lowering potential of Adenanthera pavonina Linn. in streptozotocin induced diabetic rats. Orient Pharm Exp Med 2012; 12(3): 197-203.  Back to cited text no. 21
López-Franco YL, Cervantes-Montaño CI, Martínez-Robinson KG, Lizardi-Mendoza J, Robles-Ozuna LE. Physicochemical characterization and functional properties of galactomannans from mesquite seeds (Prosopis spp.). Food Hydrocoll 2013; 30(2): 656-660.  Back to cited text no. 22
Cunha PLR, Castro RR, Rocha FAC, De Paula RCM, Feitosa JPA. Low viscosity hydrogel of guar gum: Preparation and physicochemical characterization. Int J Biol Macromol 2005; 37(1–2): 99-104.  Back to cited text no. 23
Srivastava M, Kapoor VP. Seed galactomannans: An overview. Chem Biodivers [Internet] 2005; 2(3): 295-317.  Back to cited text no. 24
Srichamroen A, Thomson ABR, Field CJ, Basu TK. In vitro intestinal glucose uptake is inhibited by galactomannan from Canadian fenugreek seed (Trigonella foenum graecum L) in genetically lean and obese rats. Nutr Res 2009; 29(1): 49-54.  Back to cited text no. 25
Dos Santos VRF, Souza BWS, Teixeira JA, Vicente AA, Cerqueira MA. Relationship between galactomannan structure and physicochemical properties of films produced thereof. J Food Sci Technol 2015; 52(12): 8292-8299.  Back to cited text no. 26
Mathur V, Mathur NK. Fenugreek and other lesser known legume galactomannan-polysaccharides: Scope for developments. J Sci Ind Res 2005; 64: 475-481.  Back to cited text no. 27
Hussain M, Bakalis S, Gouseti O, Zahoor T, Anjum FM, Shahid M. Dynamic and shear stress rheological properties of guar galactomannans and its hydrolyzed derivatives. Int J Biol Macromol 2015; 72: 687-691.  Back to cited text no. 28
Figueiró SD, Góes JC, Moreira RA, Sombra ASB. On the physico-chemical and dielectric properties of glutaraldehyde crosslinked galactomannan-collagen films. Carbohydr Polym 2004; 56(3): 313-320.  Back to cited text no. 29
Jenkins DJ, Wolever TM, Nineham R, Taylor R, Metz GL, Bacon S, et al. Guar crispbread in the diabetic diet. Br Med J 1978; 2(6154): 1744-1746.  Back to cited text no. 30
Ramulu P, Giridharan NV, Udayasekhararao P. Hypolipidemic effect of soluble dietary fiber (galactomannan) isolated from fenugreek seeds in wnin (GR-Ob) obese rats. J Med Plant Res 2011; 5(19): 4804-4813.  Back to cited text no. 31
Sellers RS, Mortan D, Michael B, Roome N, Johnson JK, Yano BL, et al. Society of toxicologic pathology position paper: Organ weight recommendations for toxicology studies. Toxicol Pathol 2007; 35(5): 751-755.  Back to cited text no. 32
Vinerean HV, Gazda LS, Hall RD, Smith BH. Streptozotocin is responsible for the induction and progression of renal tumorigenesis in diabetic wistar-furth rats treated with insulin or transplanted with agarose encapsulated porcine islets. Islets 2011; 3(4): 196-203.  Back to cited text no. 33


  [Figure 1], [Figure 2], [Figure 3], [Figure 4]

  [Table 1], [Table 2], [Table 3], [Table 4]


    Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
    Access Statistics
    Email Alert *
    Add to My List *
* Registration required (free)  

  2. Materials and...
  In this article
1. Introduction
3. Results
4. Discussion
Article Figures
Article Tables

 Article Access Statistics
    PDF Downloaded123    
    Comments [Add]    

Recommend this journal