Extraction purification and characterization of galactomannan from fenugreek for industrial utilization

Rashid, Farhat; Hussain, Shahid; Ahmed, Zaheer

doi:10.1016/j.carbpol.2017.10.025

Cited by 135 publications

(90 citation statements)

References 41 publications

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“…FC is directly related with the ability of gum to lessen the equilibrium surface tension of the air/water interface. The higher foaming properties of DFSG could be because of good association of the gum at the air–water interface and creation of a stable network that can withhold smaller solute particles (Naji et al, ; Rashid et al, ). Though mucilage or gums are not alleged to be surface‐active agents but they have the ability to increase the foaming ability of protein systems and biopolymer network production that inhibit coalescence of air bubbles (Makri & Doxastakis, ; Naji et al, ).…”

Section: Resultsmentioning

confidence: 99%

“…Scanning Electron Microscopy has become an instrument of choice to examine the surface morphology of polysaccharide gums or biopolymers (Rashid et al, ). The SEM micrographs of SFSG and DFSG captured at different magnifications (1000×, 2000×, 3000× and 4000×) were found to be different from each other might be because of deproteinisation treatment (Fig.…”

Section: Resultsmentioning

confidence: 99%

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Optimising deproteinisation methods and effect of deproteinisation on structural and functional characteristics of flaxseed gum

Safdar

Pang

Liu

et al. 2020

Int J of Food Sci Tech

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In the current study, deproteinisation rate (DPR) and carbohydrate loss ratio (CLR) in flaxseed gum (FSG) were compared as indexes by using four different deproteinised methods, that is sodium chloride (NaCl), trichloroacetic acid (TCA), hydrochloric acid (HCl) and calcium chloride (CaCl 2 ). In addition, the effect of deproteinisation on physicochemical, functional and structural characteristics (FTIR, 1 H NMR and SEM analysis) of deproteinised flaxseed gum (DFSG) was further examined. The results revealed that HCl and TCA methods had better ability of deproteinisation (97.83% and 96.21%) but resulted in higher CLR (27.66% and 24.19%), while CaCl 2 method excelled over the NaCl method in DPR (94.7% and 88.6%) and CLR (4.90% and 4.21%), respectively. Flaxseed gum showed significant functional properties even after deproteinisation and exhibited resolved resonances for both ring and anomeric protons in 1 H NMR spectra. The characteristic groups in FTIR spectra were retained after deproteinisation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Optimising deproteinisation methods and effect of deproteinisation on structural and functional characteristics of flaxseed gum

Safdar

Pang

Liu

et al. 2020

Int J of Food Sci Tech

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“…For a better comparison, figure 6 shows the FT-IR spectra of the prepared galactomannan/Zn(OH) 2 -ZnO composite and the extracted and purified galactomannan as a reference (the same that was used for preparing the composite material, and whose main characteristics were reported previously [26]). For the reference case, it is observed that the FT-IR spectrum shows the characteristic bands usually reported in the literature for galactomannan polysaccharides [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52]. In this way, the broad band at around 3360 cm −1 observed in the reference spectrum corresponds to the O-H stretching vibrations of the hydroxymethyl (-CH 2 OH) The FT-IR spectrum of the galactomannan reference also presents two bands at 1739 and 1645 cm −1 .…”

Section: 1c Ft-ir Spectroscopy Characterizationmentioning

confidence: 94%

Characterization of the antibacterial galactomannan/ $$\hbox {Zn(OH)}_{2}$$ Zn(OH) 2 –ZnO composite material prepared in situ from a green process using mesquite seeds as a biopolymer source

et al. 2019

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In this work, the preparation of an antibacterial galactomannan/Zn(OH) 2-ZnO composite material by a green process is proposed and demonstrated. The galactomannan polysaccharide was extracted from the arid-native mesquite (Prosopis spp.) seeds through a hydrothermal technique, and it was used as an organic polymeric matrix for the in situ chemical precipitation of the Zn(OH) 2-ZnO inorganic particles from simple reactions between Zn 2+ and NaOH. The preparation was performed under standard conditions in aqueous solutions. The composite material, which was obtained by centrifugation of the previous preparation, was characterized by X-ray diffraction, transmission and scanning electron microscopy, infrared spectroscopy and thermal analysis. By means of these techniques, it was deduced that the composite material is highly crystalline (about 94%), composed of about 92% inorganic and 8% organic portion, and has a predominant size of 760 nm and a mean size of 800 nm. The antibacterial activity of the composite material was also studied, which resulted better against Escherichia coli (Gram-negative bacterium) than against Staphylococcus aureus (Gram-positive bacterium), which was calculated in a difference of about 30%. This work presents the high potential of galactomannans to form functional composite materials with inorganic particles.

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“…Fenugreek seeds mainly contain galactomannan, a water-soluble heteropolysaccharide 14 . Galactomannan is hemicelluloses.…”

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confidence: 99%

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2019

IJPSR

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Natural Herbal components like seeds mucilages, exudates, gums, polysaccharides, celluloses, hemicelluloses, starch, etc. are now a day's exploited as excipients. Literature reveals medicinal, nutraceutical and pharmaceutical uses of fenugreek seed hemicelluloses in dosage form design. Hemicelluloses like galactomannans are water-soluble polysaccharides highly susceptible to hydrolysis either by acidic conditions or by uncontrolled hydrothermal processes. Chances of breakdown of intact polymeric polysaccharides chains into oligosaccharides, disaccharides, monosaccharide, etc. increases. Conversion into basic sugar units may also take place leading to changes in the polymeric behavior of the intact structures. So, in the present research percentage hemicellulose recovery is determined by invasive, indirect method in terms of basic glucose units. FTIR-SEM-DSC analysis was found to be useful characterization tools to interpret and support the recovery details of the hemicellulose isolates. Finally, it is concluded that the method of isolation of any natural component either hemicellulose, cellulose, etc. targeted to be utilized as excipient entity in dosage form design should be strictly optimized because there are numerous factors in processing which may convert these intact high molecular weight polysaccharide polymeric structures into low molecular weight of monomer units which ultimately may lead to alterations in the functional performance of these structures.

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Extraction purification and characterization of galactomannan from fenugreek for industrial utilization

Cited by 135 publications

References 41 publications

Optimising deproteinisation methods and effect of deproteinisation on structural and functional characteristics of flaxseed gum

Optimising deproteinisation methods and effect of deproteinisation on structural and functional characteristics of flaxseed gum

Characterization of the antibacterial galactomannan/ $$\hbox {Zn(OH)}_{2}$$ Zn(OH) 2 –ZnO composite material prepared in situ from a green process using mesquite seeds as a biopolymer source

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