scholarly journals Studies on the Property and Application of Starch Sugar Ester Dodecenylsuccinic

2020 ◽  
Author(s):  
Liu Zhongdong ◽  
Liu Boxiang ◽  
Wei Guohua ◽  
Zhu Xin ◽  
Wang Huabin
Keyword(s):  
Sugar Ester

scholarly journals Lipozyme 435-Mediated Synthesis of Xylose Oleate in Methyl Ethyl Ketone

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3317
Author(s):  
Maria Carolina Pereira Gonçalves ◽  
Jéssica Cristina Amaral ◽  
Roberto Fernandez-Lafuente ◽  
Ruy de Sousa Junior ◽  
Paulo Waldir Tardioli
Keyword(s):  
Oleic Acid ◽  
Methyl Ethyl Ketone ◽  
Molar Ratio ◽  
Methyl Ethyl ◽  
Sugar Ester ◽  
Molar Ratios ◽  
Emulsion Capacity ◽  
Ping Pong ◽  
Commercial Sugar ◽  
Repeated Use

In this paper, we have performed the Lipozyme 435-catalyzed synthesis of xylose oleate in methyl ethyl ketone (MEK) from xylose and oleic acid. The effects of substrates’ molar ratios, reaction temperature, reaction time on esterification rates, and Lipozyme 435 reuse were studied. Results showed that an excess of oleic acid (xylose: oleic acid molar ratio of 1:5) significantly favored the reaction, yielding 98% of xylose conversion and 31% oleic acid conversion after 24 h-reaction (mainly to xylose mono- and dioleate, as confirmed by mass spectrometry). The highest Lipozyme 435 activities occurred between 55 and 70 °C. The predicted Ping Pong Bi Bi kinetic model fitted very well to the experimental data and there was no evidence of inhibitions in the range assessed. The reaction product was purified and presented an emulsion capacity close to that of a commercial sugar ester detergent. Finally, the repeated use of Lipozyme 435 showed a reduction in the reaction yields (by 48 and 19% in the xylose and oleic acid conversions, respectively), after ten 12 h-cycles.

Development of novel flexible sugar ester vesicles as carrier systems for the antioxidant enzyme catalase for wound healing applications

2012 ◽  
Vol 47 (7) ◽  
pp. 1155-1162 ◽  
Author(s):  
Heidi M. Abdel-Mageed ◽  
Hanan M. El-Laithy ◽  
Laila G. Mahran ◽  
Afaf S. Fahmy ◽  
Karsten Mäder ◽  
...  
Keyword(s):  
Wound Healing ◽  
Antioxidant Enzyme ◽  
Sugar Ester ◽  
Antioxidant Enzyme Catalase ◽  
Carrier Systems

scholarly journals In vitro Studies on Sustained Release Suppository Formulations of Tiaprofenic Acid with Sucrose Fattv Acid Ester

2003 ◽  
Vol 71 (4) ◽  
pp. 357-364
Author(s):  
Sevgi Gūngör ◽  
Mine Orlu ◽  
Yildiz Özsoy ◽  
Ahmet Araman
Keyword(s):  
Drug Release ◽  
Sustained Release ◽  
Tiaprofenic Acid ◽  
In Vitro Release ◽  
Content Uniformity ◽  
Sugar Ester ◽  
Disintegration Time ◽  
Suppository Base ◽  
Vitro Release

The objective of this study was to evaluate the performance of Sucro Ester 7 (sucrose distearate) as additive for preparing sustained release suppositories of tiaprofenic acid. Suppocire AIM (semi-synthetic glycerides) was used as suppository base and formulations were prepared containing different ratios of sugar ester: Suppocire AIM. Content uniformity, disintegration time and in vitro release characteristics of suppositories were investigated. Significant decrease in the extent of drug release was observed with the increase in the content of sugar ester, which was due to the longer disintegration time of suppositories.

Lipase-catalyzed synthesis of fatty acid sugar ester using extremely supersaturated sugar solution in ionic liquids

2007 ◽  
Vol 99 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Sang Hyun Lee ◽  
Dung Thanh Dang ◽  
Sung Ho Ha ◽  
Woo-Jin Chang ◽  
Yoon-Mo Koo
Keyword(s):  
Ionic Liquids ◽  
Fatty Acid ◽  
Sugar Solution ◽  
Sugar Ester

Protein extraction using sugar ester reverse micelles

1999 ◽  
Vol 74 (3) ◽  
pp. 221-226 ◽  
Author(s):  
Kazumitsu Naoe ◽  
Makiko Nishino ◽  
Tomomi Ohsa ◽  
Mikio Kawagoe ◽  
Masanao Imai
Keyword(s):  
Reverse Micelles ◽  
Protein Extraction ◽  
Sugar Ester

Sugar ester-modified lipase for the esterification of fatty acids and long-chain alcohols

1996 ◽  
Vol 73 (11) ◽  
pp. 1475-1479 ◽  
Author(s):  
Sobhi Basheer ◽  
Mitsutoshi Nakajima ◽  
Uri Cogan
Keyword(s):  
Fatty Acids ◽  
Sugar Ester ◽  
Modified Lipase ◽  
Long Chain
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