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 Sucrose
57-50-1

Sucrose synthesis

5synthesis methods
Sucrose is obtained from the sugar cane plant, which contains 15–20% sucrose, and sugar beet, which contains 10–17% sucrose. Juice from these sources is heated to coagulate water-soluble proteins, which are removed by skimming. The resultant solution is then decolorized with an ion-exchange resin or charcoal and concentrated. Upon cooling, sucrose crystallizes out. The remaining solution is concentrated again and yields more sucrose, brown sugar, and molasses.
-

Yield:50-99-7 11.8% ,57-50-1 10.1%

Reaction Conditions:

with sodium hydroxide in water at 130; pH=8; for 6 h;Inert atmosphere;Sealed tube;pH-value;

Steps:

Methods

The initial reaction solution, containing 0.1746 g cellobiose, 87.3 mg catalyst, and 25 mL of deionized water, was sealed and heated and kept at the desired temperature. Before sealing, N2 gas was passed into the solution for 30 min. The magnetic catalyst was recovered by magnetic separation, washed, and vacuum dried. Concentrations of cellobiose, glucose, fructose, and other products in the reaction solution were determined quantitatively by HPLC with an external standard method by comparing to a standard sample. The pH was adjusted with H2SO4 or NaOH. On a carbon basis, the conversion of cellobiose X was calculated as X = (C0 - Ct)/C0. The yield of the monosaccharide Y1 was calculated as Y1 = C1t/2C0. The yield of sucrose Y2 was calculated as Y2 = C2t/C0. The selectivity of glucose S was calculated as S = Y1/X, where C0, Ct are the concentrations of cellobiose at reaction times t = 0 and t, respectively, and C1t, C2t are the concentrations of the monosaccharide and sucrose at time t, respectively.

References:

Yang, Ren-Qiang;Zhang, Ni;Meng, Xiang-Guang;Liao, Xiao-Hong;Li, Lu;Song, Hong-Jin [Australian Journal of Chemistry,2018,vol. 71,# 8,p. 559 - 565]

Sucrose Related Search:

平果县| 高阳县| 彰化县| 瑞丽市| 顺昌县| 涟水县| 汉寿县| 监利县| 定兴县| 东乡| 文化| 吴忠市| 静宁县| 达尔| 高陵县| 黄大仙区| 平山县| 大渡口区| 天峨县| 东至县| 湟中县| 江川县| 松滋市| 彰化县| 南陵县| 永清县| 铅山县| 莆田市| 裕民县| 宝丰县| 凉山| 宝应县| 九龙城区| 荣昌县| 海原县| 永定县| 保靖县| 陇川县| 深水埗区| 惠安县| 嵩明县|