Influence of pregelatinization on the physicochemical and compressional characteristics of starches obtained from two local varieties of Dioscorea rotundata

Gbenga, Bakre Lateef; Olakunle, Ogun; Adedayo, Alayo Muinat

doi:10.9790/3013-040602024032

Cited by 10 publications

(5 citation statements)

References 18 publications

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“…Te morphological change might be because of partial pregelatinization that had taken place which resulted in more aggregated granules, having less physical integrity compared to NTBIS. More spherical shape, aggregation, and loss of physical integrity make changes similar to that of heat moisture-treated low amylose rice starches reported elsewhere [24,25].…”

Section: Discussionsupporting

confidence: 71%

Comparative Direct Compression Property of a Novel Pregelatinized Starch in Paracetamol Tablets

Balcha Balla,

Mary Joseph,

Belete

2023

Advances in Pharmacological and Pharmaceutical Sciences

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Background. Among all the pharmaceutical dosage forms, tablets are still the most preferred and the most commonly used option because of their advantages. The direct compression method of tablet preparation exempts several steps needed in the granulation method. Therefore, the pursuit of better direct compression tablet excipients is evident in contemporary research endeavors. Pregelatinized Taro Boloso-I starch has comparable flow properties and higher compressibility and compactibility than Starch 1500®. However, there is no evidence in the literature regarding the lubricant sensitivity and dilution potential of pregelatinized Taro Boloso-I starch. This study was aimed at performing the in vitro evaluation of paracetamol tablets prepared using pregelatinized Taro Boloso-I starch as a direct compression excipient using paracetamol as a model drug. Methods. Taro Boloso-I starch was pregelatinized, and its properties including amylose to amylopectin ratio, densities, flow properties, swelling power, water solubility index, particle morphology, moisture content, and moisture sorption profile were evaluated. Furthermore, the lubricant sensitivity test, dilution potential study, and compatibility test with the paracetamol drug using ATR spectroscopy were performed. The properties of the directly compressed tablets prepared accordingly were evaluated. The majority of evaluations were performed in comparison with Starch 1500®. Results and Discussion. PGTBIS had a significantly lower amount of amylose than Starch 1500®. In the ATR-IR spectra of the mixture of the paracetamol and pregelatinized PGTBIS, all the major absorbance peaks of the drug were maintained indicating the absence of chemical modifications. PGTBIS showed better flow properties than Starch 1500®. The modified starch was shown to withstand magnesium stearate up to 0.5% concentration. Conclusion. PGTBIS could accommodate higher drug cargo than Starch 1500® with acceptable tablet properties. Accordingly, PGTBIS starch could be taken as a potential direct compression excipient.

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Section: Discussionsupporting

confidence: 71%

Comparative Direct Compression Property of a Novel Pregelatinized Starch in Paracetamol Tablets

Balcha Balla,

Mary Joseph,

Belete

2023

Advances in Pharmacological and Pharmaceutical Sciences

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“…FTIR spectra were recorded on an FTIR System (Spectrum 100 FTIR, Perkin Elmer, Waltham, MA, USA) using KBr pellets generated by way of the methodology described in Reference [ 29 ], with slight modifications. Starch (2 mg) was weighed, ground, and mixed uniformly with 200 mg of pure KBr powder.…”

Section: Methodsmentioning

confidence: 99%

Effects of Dual Modification with Succinylation and Annealing on Physicochemical, Thermal and Morphological Properties of Corn Starch

Ariyantoro

Katsuno

Nishizu

2018

Foods

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The objective of this study was to investigate the effects of annealing, succinylation, and a dual modification process (succinylation–annealing) on the physicochemical, thermal, and morphological properties of corn starch. Specifically, the properties of interest were the water-binding capacity (WBC), swelling power, paste clarity, solubility, pasting properties, stability ratio, and thermal and morphological characteristics. The dual modification process increased the physicochemical properties (WBC, swelling power, peak viscosity, and paste clarity) and increased the gelatinization temperature and gelatinization enthalpy (∆H), but had no effect on the morphological properties and X-ray diffraction patterns. A comparison of samples, made using each of the processes, showed that dual modification increased the stability ratio (more stable viscosity under thermal and shear stress), which was 0.69 for dual modified starch, compared with 0.64, 0.58 and 0.44 for native, succinylated, and annealed starches, respectively. The findings of the present study are of potential use in the food industry.

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“…The IR spectra of starches were run as KBr pellets on FTIR System (Spectrum Two PerkinElmer, England) in the frequency range 350-40000 cm -1 or more according to method of Gbenga et al,(2014) with slight modifications. Two milligrams of the samples were grounded and mixed uniformly with pure KBr powder.…”

Section: Syneresis% =mentioning

confidence: 99%

Evaluation of Effects of Increasing Molar Substitution of Hydroxypropylene on Physicochemical, Functional and Morphological Properties of Starch from Water Yam (Dioscorea Alata)

Arueya¹,

Ojesanmi²

2019

JFR

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Amidst rising demand for modified starch, hydroxypropylated derivatives from water yam, an underutilized tropical botanical source remains unexplored. The objective of this work therefore is to extract starch from water yam, modify same by hydroxypropylation and determine their physicochemical, functional and morphological characteristics. Extraction of starch was carried out by blending peeled water yam previously soaked in 0.2%(w/v) NaHSO3 solution and filtering the resulting slurry. The filterate was next suspended in 0.2% NaOH solution, allowed to sediment and the supernatant oven-dried (400C) for 24 hrs. The dried product was subjected to hydroxypropylation (HP) (propylene oxide 4-12%/100g starch) and extent of molar substitution (MS) determined. The native and Hydroxypropylated starch (HPS) were evaluated for physicochemical, functional and morphological characteristics following standard methods. Pasting properties were analysed using Rapid Visco Analyzer (RVA) and elucidation of inherent functional groups was carried out by analyzing the FTIR Spectrum. Starch yield of 84.2% (dry wt. basis) and molar substitution (0.0024-0.05) of HPS were established. Bulk density increased (0.4988-0.6005g/cm3) with MS. There was significant (p=0.05) increase in the degree of Whiteness (W) (42.4-63.6%). Although granule size reduction was evident (33.88-33.43µm), hydroxypropylation did not affect their morphology. There was decline in concentrations of crude protein (0.18-0.01%), ash (1.35-0.34%) and amylose (44.19-37.48%) as MS rose. In contrast, there was significant (p=0.05) increase in water (1.76-2.66g/g) and oil absorption capacities (0.72-1.42g/g), swelling power (1.54-4.19g/g) and solubility (3.17-5.84g/g) at 500C. Freeze thaw cycles showed marked reduction in syneresis (10.3-1.09%) as MS increased. Peak Viscosity, pasting temperature and peak time of the HPS ranges were 297.83-583.6, 81.9-86.40C, and 4.5-7.0 mins respectively. FTIR band spectra indicated the presence of hydroxypropyl substituent groups in the modified starch. Hydroxypropylated starch (from water yam) at different molar substitution has been characterised and its properties established with strong potentials for wider applications in food systems.

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Influence of pregelatinization on the physicochemical and compressional characteristics of starches obtained from two local varieties of Dioscorea rotundata

Cited by 10 publications

References 18 publications

Comparative Direct Compression Property of a Novel Pregelatinized Starch in Paracetamol Tablets

Comparative Direct Compression Property of a Novel Pregelatinized Starch in Paracetamol Tablets

Effects of Dual Modification with Succinylation and Annealing on Physicochemical, Thermal and Morphological Properties of Corn Starch

Evaluation of Effects of Increasing Molar Substitution of Hydroxypropylene on Physicochemical, Functional and Morphological Properties of Starch from Water Yam (Dioscorea Alata)

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