Effect of Heat Treatments on in vitro Starch Hydrolysis of Selected Grains

2006 ◽  
Vol 35 (8) ◽  
pp. 1102-1105 ◽  
Keyword(s):  
Heat Treatments ◽  
Starch Hydrolysis ◽  
Hydrolysis Of

Does cell wall integrity in legumes flours modulate physiochemical quality and in vitro starch hydrolysis of gluten-free bread?

2019 ◽  
Vol 59 ◽  
pp. 110-118 ◽  
Author(s):  
Fatma Boukid ◽  
Elena Vittadini ◽  
Federica Lusuardi ◽  
Tommaso Ganino ◽  
Eleonora Carini ◽  
...  
Keyword(s):  
Cell Wall ◽  
Cell Wall Integrity ◽  
Starch Hydrolysis ◽  
Gluten Free ◽  
Hydrolysis Of

scholarly journals Nutrient Content and In-vitro Starch Hydrolysis of Some Varieties of NERICA Rice

2018 ◽  
Vol 7 (1) ◽  
pp. 68
Author(s):  
Otemuyiwa Israel Olusegun ◽  
Farotimi Oluwatosin Grace ◽  
Falade Olumuyiwa Sunday ◽  
Sanusi Kayode ◽  
Adewusi Steve Adeniyi
Keyword(s):  
Glycemic Index ◽  
High Performance ◽  
Nutrient Content ◽  
Reducing Sugar ◽  
Starch Hydrolysis ◽  
Digestion Method ◽  
Nutrient Quality ◽  
Wet Digestion ◽  
Hydrolysis Of

This study investigated the nutrient quality and the glycemic index of some varieties of Africa (NERICA) rice. The nutrients were analyzed using the official methods of analysis (AOAC), minerals using Atomic Absorption Spectrophotometer (AAS) after wet digestion, vitamins using a High performance Liquid Chromatography (HPLC), while in-vitro starch hydrolysis was performed using multi-enzyme digestion method. The results were compared with that of Aroso (imported rice). The content of moisture, ash, fiber, fat, protein and carbohydrate ranged from 8.2 to 9.8, 0.02 to 0.09, 0.3 to 0.5, 2.4 to 5.7, 5.9 to 13.0, and 74.4 to 82.8%, respectively. Iron varied from 30 to 69.3 mg / kg, zinc, (2.4 to 10.4) copper, (0.5 to 4.6) calcium (43.4 to 146) and magnesium from 85.5 to 368 mg / kg. Ascorbic acid ranged from (8.1 to 36.2 mg / kg, pyridoxine (372 to 789 mg / kg), thiamine (116 to 383 mg / kg) and folate from 66.6 to 142 mg / kg. Reducing sugar, total sugar and starch (mg / g) ranged from 60 to 117 and 96 to 157, and 171 to 188 mg / g, respectively, while amylose ranged between 19 and 30%. There were negative correlation between glycemic index and fibre (r = -0.814); and between hydrolysis index and fibre (r = -0.731). The study showed that NERICA rice contain essential nutrients but it has high glycemic index could be a risk factor for disease like Diabetes mellitus

scholarly journals In-vitro starch hydrolysis of chitosan incorporating whey protein and wheat starch composite gels

Heliyon ◽  
2017 ◽  
Vol 3 (10) ◽  
pp. e00421 ◽  
Author(s):  
Natasha Yang ◽  
John Ashton ◽  
Elisabeth Gorczyca ◽  
Stefan Kasapis
Keyword(s):  
Whey Protein ◽  
Wheat Starch ◽  
Starch Hydrolysis ◽  
Composite Gels ◽  
Hydrolysis Of

Fortifying compounds reduce starch hydrolysis of potato chips during gastro‐small intestinal digestion in vitro

2021 ◽  
pp. 2000196
Author(s):  
Yudy Duarte‐Correa ◽  
Oscar Vega‐Castro ◽  
Nataly López‐Barón ◽  
Jaspreet Singh
Keyword(s):  
Potato Chips ◽  
Starch Hydrolysis ◽  
Intestinal Digestion ◽  
Small Intestinal ◽  
Hydrolysis Of

Total Synthesis and Antibacterial Screening of (±)-6,8-Dihydroxy-3- undecyl-3,4-dihydroisochromen-1-one: A Structural Analogue of Metabolites from Ononis natrix

2019 ◽  
Vol 16 (3) ◽  
pp. 245-248
Author(s):  
Hummera Rafique ◽  
Aamer Saeed ◽  
Ehsan Ullah Mughal ◽  
Muhammad Naveed Zafar ◽  
Amara Mumtaz ◽  
...  
Keyword(s):  
Total Synthesis ◽  
Structural Analog ◽  
Diffusion Method ◽  
Bacterial Strains ◽  
Antibacterial Screening ◽  
Maximum Inhibition ◽  
Bacillus Subtilus ◽  
Hydrolysis Of ◽  
Direct Condensation

Background: (±)-6,8-Dihydroxy-3-undecyl-3,4-dihydroisochromen-1-one is one of the structural analog of several substituted undecylisocoumarins isolated from Ononis natrix (Fabaceae), has been successfully synthesized by direct condensation of homopthalic acid (1) with undecanoyl chloride yields isochromen-1-one (2). Methods: Alkaline hydrolysis of (2) gave the corresponding keto-acid (3), which is then reduced to hydroxy acid (4) then its cyclodehydration was carried out with acetic anhydride to afford 3,4- dihydroisochromen-1-one (5). Followed by demethylation step, the synthesis of target 6,8- dihydroxy-7-methyl-3-undecyl-3,4-dihydroisocoumarin (6) was achieved. Results: In vitro antibacterial screening of all the synthesized compounds were carried out against ten bacterial strains by agar well diffusion method. Conclusion: Newly synthesized molecules exhibited moderate antibacterial activity and maximum inhibition was observed against Bacillus subtilus and Salmonella paratyphi.

Studies on the mechanism of acute inhibition of thyroglobulin hydrolysis by iodine

1985 ◽  
Vol 108 (4) ◽  
pp. 511-517 ◽  
Author(s):  
Nandalal Bagchi ◽  
Birdie Shivers ◽  
Thomas R. Brown
Keyword(s):  
Time Course ◽  
Period 2 ◽  
Iodotyrosine Deiodinase ◽  
Rate Of Hydrolysis ◽  
Underlying Mechanisms ◽  
Excess Iodide ◽  
Sites Of Action ◽  
Hydrolysis Of

Abstract. Iodine in excess is known to acutely inhibit thyroidal secretion. In the present study we have characterized the time course of the iodine effect in vitro and investigated the underlying mechanisms. Labelled thyroid glands were cultured in vitro in medium containing mononitrotyrosine, an inhibitor of iodotyrosine deiodinase. The rate of hydrolysis of labelled thyroglobulin was measured as the proportion of labelled iodotyrosines and iodothyronines recovered at the end of culture and was used as an index of thyroidal secretion. Thyrotrophin (TSH) administered in vivo acutely stimulated the rate of thyroglobulin hydrolysis. Addition of Nal to the culture medium acutely inhibited both basal and TSH-stimulated thyroglobulin hydrolysis. The effect of iodide was demonstrable after 2 h, maximal after 6 h and was not reversible upon removal of iodide. Iodide abolished the dibutyryl cAMP induced stimulation of thyroglobulin hydrolysis. Iodide required organic binding of iodine for its effect but new protein or RNA synthesis was not necessary. The inhibitory effects of iodide and lysosomotrophic agents such as NH4C1 and chloroquin on thyroglobulin hydrolysis were additive suggesting different sites of action. Iodide added in vitro altered the distribution of label in prelabelled thyroglobulin in a way that suggested increased coupling in the thyroglobulin molecule. These data indicate that 1) the iodide effect occurs progressively over a 6 h period, 2) continued presence of iodide is not necessary once the inhibition is established, 3) iodide exerts its action primarily at a post cAMP, prelysosomal site and 4) the effect requires organic binding of iodine, but not new RNA or protein synthesis. Our data are consistent with the hypothesis that excess iodide acutely inhibits thyroglobulin hydrolysis by increasing the resistance of thyroglobulin to proteolytic degradation through increased iodination and coupling.

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