추천 제품
애플리케이션
α-Amylase is used to hydrolyze α bonds of α-linked polysaccharides, such as starch and glycogen. α-Amylase, from Sigma, has been used in various plant studies, such as metabolism studies in Arabidopsis . α-has also been also used to study the ability of corn and starch to protect enzyme activity. The enzyme has been used to compare the effects of bacterial and fungal α-amylase and scalded flour on bread quality and shelflife. It has also been used to determine the optimal levels of these components in order to achieve maximum volume and bread freshness. Furthermore, it has been used to digest hydroxypropylated starch in Korean waxy rice cake to retard retrogradation.
생화학적/생리학적 작용
α-Amylase hydrolyzes the α-(1,4) glucan linkages in polysaccharides of three or more α-(1,4) linked D-glucose units. Natural substrates such as starch and glycogen are broken down into glucose and maltose. α -amylase, isolated from Bacillus subtilis is a dimer and has a monomer molecular weight of 48.9 kDa. α-Amylase is a metalloprotein and contains atleast one mol of calcium ion. The presence of calcium ion increases the stability of the enzyme towards denaturation by heat, acid, or urea. The pH range for activity of this product is 5.0 to 7.5, with the optimum pH range being 6.0-7.0. This product is stable from pH 5.0 to 10.0. The optimum temperature range is 65-75 °C. The effective temperature range is up to 90 °C.
품질
Contains starch as an extender.
단위 정의
One unit will liberate 1.0 mg of maltose from starch in 3 min at pH 6.9 at 20 °C.
기타 정보
View more information on enzymes for complex carbohydrate analysis at www.sigma-aldrich.com/enzymeexplorer
신호어
Danger
유해 및 위험 성명서
예방조치 성명서
Hazard Classifications
Resp. Sens. 1
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
개인 보호 장비
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
시험 성적서(COA)
제품의 로트/배치 번호를 입력하여 시험 성적서(COA)을 검색하십시오. 로트 및 배치 번호는 제품 라벨에 있는 ‘로트’ 또는 ‘배치’라는 용어 뒤에서 찾을 수 있습니다.
이미 열람한 고객
Utilization of Hydroxypropylated Waxy Rice and Corn Starches in Korean Waxy Rice Cake to Retard Retrogradation
Han J-A, et al.
Cereal Chem., 82(1), 88-92 (2005)
Sylwia Głazowska et al.
Journal of experimental botany, 70(21), 6461-6473 (2019-09-11)
Plants have evolved different strategies to utilize various forms of nitrogen (N) from the environment. While regulation of plant growth and development in response to application of inorganic N forms has been characterized, our knowledge about the effect on cell
Comparison of the effects of microbial α-amylases and scalded flour on bread quality
Hopek M, et al.
Acta Scientiarum Polonorum. Technologia Alimentaria, 5(1), 97-106 (2006)
Theoretical and Experimental Studies of the Effects of Heat, EDTA, and Enzyme Concentration on the Inactivation Rate of α-Amylase from Bacillus sp.
Lecker DN and Khan A
Biotechnol. Progress, 12(5), 713-717 (1996)
Usage of Enzyme Substrate to Protect the Activities of Cellulase, Protease and α-Amylase in Simulations of Monogastric Animal and Avian Sequential Total Tract Digestion
Wang HT and Hsu JT
Asian-Australasian Journal of Animal Sciences, 19(8), 1164-1173 (2006)
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