Isolation and Physico‐chemical Characterization of <i>Triticum Decocum</i> Starch

Mosisa, Balisa; Belete, Anteneh; Gebre‐Mariam, Tsige

doi:10.1002/star.202000226

Cited by 4 publications

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“…The reactivities of the three free OH groups of the starch are different. As a result of steric hindrance, the secondary OH groups on C (2) and C (3) are less reactive than the primary OH group on C (6) . The C (3) OH is less reactive than the C (2) OH.…”

Section: Discussionmentioning

confidence: 99%

“…After the preactivation for 2 h, the reaction mixture was cooled to (50, 60, and 75˚C). Then the activated starch was mixed with propionic anhydride (at 1:1, 1:2, 1:4, and 1:8 ratio) and the reaction continued for (3,6,12, and 24 h) to ensure reaction equilibrium. The content of the reaction mixture was precipitated by adding 100 mL of isopropanol.…”

Section: Plos Onementioning

confidence: 99%

“…Starch and its derivatives are the most utilized additives in the production of various pharmaceutical formulations. A few of the Ethiopian plants which have been studied and proven to have starch for pharmaceutical applications include Enset ( Ensete ventricosum ) [ 1 ]; Ethiopian Yam ( Dioscorea abyssinica ) [ 2 ]; Ethiopian Potato ( Plectranthus edulis ) [ 3 ]; Anchote ( Coccinia abyssinica ) [ 4 ]; Cassava ( Manihot esculenta ) [ 5 ] and Ethiopian oat ( Triticum decocum ) [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, characterization, and in vivo safety evaluation of propylated Dioscorea abyssinica starch

2022

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The use of starch, a natural polymeric material, and derivatives thereof is based on its adhesive, thickening, gelling, swelling, and film-forming properties, as well as its ready availability. The objective of this research work is to develop an effective propylated Dioscorea abyssinica starch (PDAS) as a hydrophobic excipient for pharmaceutical applications with a reasonable price. This paper reports on the synthesis, characterization, and in vivo safety evaluation of PDAS. Native Dioscorea abyssinica starch (NDAS) was modified to its propylated form with propionic anhydride and characterized. Crystallinity, morphological structure, thermal behavior, solubility, and safety of PDAS were evaluated using x-ray diffraction, SEM, thermogravimetric, gravimetric, and toxicity studies, respectively. Propionyl content and degree of substitution (DS) of starch increased significantly (p < 0.05) with an increase in reaction time and temperature. Propionyl content and DS of starch increased significantly (p < 0.05) with a decrease in the ratio of starch to pyridine and starch to propionic anhydride in the reaction medium. FTIR spectra of PDAS indicated that hydroxyl groups participated in the propylation reaction. X-ray diffraction results showed that the chemical modification destroyed the crystalline structure of the NDAS. SEM of NDAS showed a rounded shape which became irregular after propylation. Thermogravimetric curves revealed that all the PDAS samples decomposed at higher temperatures than their native counterparts. At higher DS, swelling power and solubility in an aqueous environment significantly (p < 0.05) decreased below that of the native starch. PDAS with high DS, were soluble in organic solvents at room temperature. But PDAS with lower DS didn’t dissolve in all types of organic solvents used. PDAS (DS = 2.842) in distilled water did not produce adverse effects in rats. Based on the results obtained, it can be concluded that PDAS can be considered as a generally safe excipient and fulfills the physicochemical properties of a hydrophobic excipient.

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Section: Discussionmentioning

confidence: 99%

Section: Plos Onementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis, characterization, and in vivo safety evaluation of propylated Dioscorea abyssinica starch

2022

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“…8,11 There is a current surge in global awareness and interest in the utilization of natural polymers such as starch for industrial consumption. 12 Maize starch, the most commonly available starch is in high demand both for use as food and for industrial purposes. Therefore, there is a great need for viable alternative sources of starch.…”

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Extraction and Physicochemical Characterization of Starch from Pterocarpus santalinoides Seeds

2023

TJNPR

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IntroductionStarch is an important part of many foods. It serves as the principal source of energy for many food preparations. 1 Starches are present in many tropical vegetables, cereals, legumes, fruits, rhizomes, seeds, stems, roots, tubers and corms of plants, as microscopic granules having characteristic shapes and sizes where they serve as a nutritious carbohydrate source. Starch is a common, affordable and easily available material that is utilized in many areas of life for the manufacture of industrial products such as paper, confectionaries, paint, beverages, textile, adhesive, pharmaceuticals and plastics. It is a safe, renewable, biodegradable, biocompatible and edible polymer of glucose that occurs naturally having profound usage in food and polymer science. [2][3][4] It is a complex microparticle that is composed of two key constituents, amylose (20-30%), which is linear and amylopectin (70-80%) which is highly branched. It is often associated with water, protein and lipids, phospholipids, soluble and insoluble fiber, and some minerals that exist in minute quantities but play a vital role in its the physicochemical properties. 2,4,5 Both amylose and amylopectin are polysaccharides formed by α-condensation of dglucose units. 5 Starch has a heterogeneous and semi-crystalline granular structure.

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Isolation and Characterization of Colon Targeting Starch from the Non‐Conventional Source of Jharkhand, India

Roy

Kumar

2023

Starch Stärke

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Staple foods are generally the conventional sources of starch. The exploration of non‐conventional and cheap sources of starch has gained momentum. In present study, starch from mankanda (Alocaisa macrrorhizos) tubers was isolated by using basic (NaOH 0.05%, w/w; NAS) and acidic (citric acid 0.03%; CAS) media and evaluated for its physicochemical, structural, thermal, rheological and release profile. The %yield of NAS and CAS starch was found to be 8.14% and 7.28%, with neutral pH, high water holding capacity, moisture content, amylose content, low ash values, restricted swelling, and excellent flow. The granules of the starches were irregular, with a diameter ranging from 1.34‐16.12 um. XRD analysis revealed the combination of type A and B crystal. FT‐IR spectra of both starch samples were almost found to be similar in nature. TGA and DSC analysis indicate good thermal stability. Both starches exhibited shear thinning behavior. In‐vitro drug release studies reflects that that the extracted native starch from mankanda tubers has an immense potential for the development of sustained release formulations to target the lower gastrointestinal region like colon by protecting the drug from the physiological environment of the stomach and small intestine.This article is protected by copyright. All rights reserved

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Isolation and Physico‐chemical Characterization of Triticum Decocum Starch

Cited by 4 publications

References 50 publications

Synthesis, characterization, and in vivo safety evaluation of propylated Dioscorea abyssinica starch

Synthesis, characterization, and in vivo safety evaluation of propylated Dioscorea abyssinica starch

Extraction and Physicochemical Characterization of Starch from Pterocarpus santalinoides Seeds

Isolation and Characterization of Colon Targeting Starch from the Non‐Conventional Source of Jharkhand, India

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