نتایج جستجو برای: α amylase

تعداد نتایج: 173043  

2013
Byung-Hoo Lee Like Yan Robert J. Phillips Bradley L. Reuhs Kyra Jones David R. Rose Buford L. Nichols Roberto Quezada-Calvillo Sang-Ho Yoo Bruce R. Hamaker

For digestion of starch in humans, α-amylase first hydrolyzes starch molecules to produce α-limit dextrins, followed by complete hydrolysis to glucose by the mucosal α-glucosidases in the small intestine. It is known that α-1,6 linkages in starch are hydrolyzed at a lower rate than are α-1,4 linkages. Here, to create designed slowly digestible carbohydrates, the structure of waxy corn starch (W...

2014
Dyah Ratna Wulan Edi Priyo Utomo Chanif Mahdi

Inhibition of α-amylase is an important strategy to control post-prandial hyperglycemia. The present study on Ruellia tuberosa, known as traditional anti-diabetic agent, is being provided in silico study to identify compounds inhibiting α-amylase in rat and human. Compounds were explored from PubChem database. Molecular docking was studied using the autodock4. The interactions were further visu...

2017
Masaru Nakata Yosuke Fukamatsu Tomomi Miyashita Makoto Hakata Rieko Kimura Yuriko Nakata Masaharu Kuroda Takeshi Yamaguchi Hiromoto Yamakawa

Global warming impairs grain filling in rice and reduces starch accumulation in the endosperm, leading to chalky-appearing grains, which damages their market value. We found previously that high temperature-induced expression of starch-lytic α-amylases during ripening is crucial for grain chalkiness. Because the rice genome carries at least eight functional α-amylase genes, identification of th...

2010
Sarinya Akkarachiyasit Piyawan Charoenlertkul Sirintorn Yibchok-anun Sirichai Adisakwattana

Cyanidin and its glycosides are naturally dietary pigments which have been indicated as promising candidates to have potential benefits to humans, especially in the prevention and treatment of diabetes mellitus. We investigated the structure activity relationships of cyanidin and its glycosides to inhibit intestinal α-glucosidases and pancreatic α-amylase in vitro. The results found that cyanid...

2017
Umi Baroroh Muhammad Yusuf Saadah Diana Rachman Safri Ishmayana Mas Rizky A A Syamsunarno Jutti Levita Toto Subroto

Starch is a polymeric carbohydrate composed of glucose. As a source of energy, starch can be degraded by various amylolytic enzymes, including α-amylase. In a large-scale industry, starch processing cost is still expensive due to the requirement of high temperature during the gelatinization step. Therefore, α-amylase with raw starch digesting ability could decrease the energy cost by avoiding t...

2017
Hong Zhu L Bruce Reynolds Rima Menassa

BACKGROUND Alpha amylase hydrolyzes α-bonds of polysaccharides such as starch and produces malto-oligosaccharides. Its starch saccharification applications make it an essential enzyme in the textile, food and brewing industries. Commercially available α-amylase is mostly produced from Bacillus or Aspergillus. A hyper-thermostable and Ca 2++ independent α-amylase from Pyrococcus furiosus (PFA) e...

2016
Nimet Baltas Barbaros Dincer Arife Pinar Ekinci Sevgi Kolayli Ahmet Adiguzel

α-Amylase from Anoxybacillus thermarum A4 was purified using ammonium sulphate precipitation and Sephadex G-100 gel filtration chromatography, with 29.8-fold purification and 74.6% yield. A4 amylase showed best performance for soluble potato starch hydrolysis at 70 °C and pH 5.5-10.5. A4 amylase was extremely stable at +4 °C, and the enzyme retained over 65% of its original α-amylase activity a...

2017
Yi-Seul Jung Byung-Hoo Lee Sang-Ho Yoo

Porous starch granules (PSGs) with various pores and cavity sizes were prepared by amylolysis enzymes. The greatest hydrolysis rate on corn starch granule was observed with α-amylase, followed by gluco- and β-amylases. Temperature increase enhanced glucoamylase reaction rate more drastically than other enzyme treatments. Final hydrolysis level with glucoamylase reached to 66.9%, close to 67.5% ...

2014
Alex Whan Anne-Sophie Dielen Jos Mieog Andrew F. Bowerman Hannah M. Robinson Keren Byrne Michelle Colgrave Philip J. Larkin Crispin A. Howitt Matthew K. Morell Jean-Philippe Ral

Wheat starch degradation requires the synergistic action of different amylolytic enzymes. Our spatio-temporal study of wheat α-amylases throughout grain development shows that AMY3 is the most abundant isoform compared with the other known α-amylases. Endosperm-specific over-expression of AMY3 resulted in an increase of total α-amylase activity in harvested grains. Unexpectedly, increased activ...

2016
David Mizael Ortíz-Martinez Catalina Rivas-Morales Myriam Angelica de la Garza-Ramos Maria Julia Verde-Star Maria Adriana Nuñez-Gonzalez Catalina Leos-Rivas

Diabetes mellitus is a public health problem worldwide. For this reason, ethanolic extract of Miconia sp. from Oaxaca, Mexico, was selected in search of an alternative against this disease. The effect of Miconia sp. on mRNA expression of PPARγ on cell line 3T3-L1, its effect on alpha amylase and alpha glucosidase, lipid accumulation during adipogenesis, and cell viability on VERO cells were eva...

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