A7130
β-Amylase from barley
Type II-B, 20-80 units/mg protein (biuret)
동의어(들):
1,4-α-D-Glucan maltohydrolase
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10000 UNITS
₩173,870
50000 UNITS
₩854,427
250000 UNITS
₩2,693,201
₩173,870
출고 가능일2025년 4월 10일세부사항
기존과 동일한 품질을 인하된 가격으로 - 어려운 예산 상황을 머크와 함께 극복하세요
모든 사진(5)
크기 선택
보기 변경
10000 UNITS
₩173,870
50000 UNITS
₩854,427
250000 UNITS
₩2,693,201
About This Item
₩173,870
출고 가능일2025년 4월 10일세부사항
기존과 동일한 품질을 인하된 가격으로 - 어려운 예산 상황을 머크와 함께 극복하세요
추천 제품
유형
Type II-B
양식
powder
특이 활성도
20-80 units/mg protein (biuret)
환경친화적 대안 제품 특성
Waste Prevention
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product
환경친화적 대안 카테고리
, Enabling
배송 상태
wet ice
저장 온도
2-8°C
유사한 제품을 찾으십니까? 방문 제품 비교 안내
일반 설명
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency and waste prevention when used in starch ethanol research. For more information see the article in biofiles.
애플리케이션
β -Amylase is used to hydrolyze α bonds of α-linked polysaccharides, such as starch and glycogen. β -Amylase, has been used in various plant studies, such as carbon starvation studies in Populus tremuloides [1]. β -Amylase, from barley, has been used to study how pressure and temperature affect catalytic activity [2].
생화학적/생리학적 작용
β-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. Pure, crystalline β-amylase preparation consists of four isoenzymes with different isoelectric points. The enzyme polymerizes very rapidly through the sulfhydryl groups in the absence of reducing agents. p-Chloromercuribenzoate inhibits the polymerization and the enzymatic activity. The reducing agents mercaptoethanol or dithiothreitol can completely restore the activity.[3]
품질
Crude
단위 정의
One unit will liberate 1.0 mg of maltose from starch in 3 min at pH 4.8 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 3
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
개인 보호 장비
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
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시험 성적서(COA)
Lot/Batch Number
이미 열람한 고객
Volker Heinz et al.
Biotechnology progress, 21(6), 1632-1638 (2005-12-03)
The depolymerization of starch by beta-amylase during exposure to hydrostatic pressure up to 700 MPa and within a temperature range from 20 to 70 degrees C has been investigated. Inactivation of the enzyme as well as alterations in conversion speed
Purification and characterisation of crystalline -amylase from barley.
K Visuri et al.
European journal of biochemistry, 28(4), 555-565 (1972-08-04)
Claudinéia Aparecida Soares et al.
Journal of agricultural and food chemistry, 59(12), 6672-6681 (2011-05-20)
Different banana cultivars were used to investigate the influences of starch granule structure and hydrolases on degradation. The highest degrees of starch degradation were observed in dessert bananas during ripening. Scanning electron microscopy images revealed smooth granule surface in the
Heike Reinhold et al.
The Plant cell, 23(4), 1391-1403 (2011-04-14)
Plants contain β-amylase-like proteins (BAMs; enzymes usually associated with starch breakdown) present in the nucleus rather than targeted to the chloroplast. They possess BRASSINAZOLE RESISTANT1 (BZR1)-type DNA binding domains--also found in transcription factors mediating brassinosteroid (BR) responses. The two Arabidopsis
Déborah LeCorre et al.
Biomacromolecules, 13(1), 132-137 (2011-12-03)
Starch nanocrystals (SNCs) are crystalline platelets resulting from the acid hydrolysis of starch. A limiting factor for their more widespread use is their preparation duration. Therefore, this study investigates the possibility of developing an enzymatic pretreatment of starch to reduce
프로토콜
Beta-amylase is found in bacteria, fungi, and plants. To measure β-amylase activity, this assay uses a colorimetric spectrophotometric stop reaction at 540 nm.
활성 필터
자사의 과학자팀은 생명 과학, 재료 과학, 화학 합성, 크로마토그래피, 분석 및 기타 많은 영역을 포함한 모든 과학 분야에 경험이 있습니다..
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