一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List SAGITTATOSIDE A
118525-35-2

SAGITTATOSIDE A synthesis

2synthesis methods
-

Yield:-

Reaction Conditions:

with β-dextranase;water in aq. acetate buffer at 60; pH=4.5; for 1 h;Catalytic behavior;Enzymatic reaction;Reagent/catalyst;Temperature;pH-value;Solvent;

Steps:

Screening of enzymes

In the first stage, five commercial enzymes including β-glucosidase, β-dextranase, cellulase, naringinase and glucoamylase were investigated for efficient hydrolysis of epimedin A to sagittatoside A (Figure S1). of Epimedin A and each of these enzymes (12.5~800 μg) was mixed and dissolved in 2 mL of 0.20 M HAc-NaAc buffer (pH 4.5), prior to incubation at 60°C for 1 hr. Then, another 2 mL of MeOH was added into the hydrolysate to denature the enzymes after hydrolysis. The resulting suspension was filtered through a 0.20 μm polytetrafluoroethylene (PTFE) membrane syringe, and subsequent 1 mL of filtrate was collected into clear vial for HPLC-UV analysis after the initial 1 mL was discarded. Then, the enzyme was selected from these five enzymes according to the conversion rate of Epimedin A.

References:

Shen, Yuping;Lu, Yi;Gao, Jing;Zhu, Yeting;Wang, Man;Jing, Shunli;Xu, Lili;Yang, Huan;Jia, Xiaobin [Natural Product Research,2019,vol. 33,# 21,p. 3095 - 3102] Location in patent:supporting information

SAGITTATOSIDE A Related Search:

北辰区| 新乡县| 封开县| 长泰县| 曲周县| 西贡区| 泾阳县| 天峻县| 商河县| 静乐县| 三穗县| 南丹县| 贞丰县| 合川市| 榆社县| 磴口县| 广宁县| 连州市| 威宁| 高碑店市| 牟定县| 乳源| 吉首市| 盐池县| 昌黎县| 茌平县| 巴青县| 金平| 美姑县| 瓮安县| 巫山县| 灵石县| 永州市| 九台市| 高雄市| 剑河县| 万荣县| 崇左市| 富民县| 仁布县| 巨鹿县|