نتایج جستجو برای: Ethyl acetate-Ethanol

تعداد نتایج: 179099  

2010

DGBA 1 Diethylene Glycol n-Butyl Ether Acetate (CAS# 124-17-4) (Synonyms: Butyl carbitol acetate; Butyl diglycol acetate; 2-(2-Butoxyethoxy)ethanol acetate; 2(2-Butoxyethoxy)ethyl acetate; Acetic acid 2-(2-butoxyethoxy)ethyl ester; Butoxyethoxyethyl acetate; Butyl carbitol acetate; Butyl diethylene glycol acetate; Diethyleneglycol monobutyl ether acetate; Diglycol monobutyl ether acetate; Ektas...

2015
Oleg G. Salnikov Kirill V. Kovtunov Igor V. Koptyug

An experimental approach for the production of catalyst-free hyperpolarised ethanol solution in water via heterogeneous hydrogenation of vinyl acetate with parahydrogen and the subsequent hydrolysis of ethyl acetate was demonstrated. For an efficient hydrogenation, liquid vinyl acetate was transferred to the gas phase by parahydrogen bubbling and almost completely converted to ethyl acetate wit...

2017
Ann-Kathrin Löbs Ronja Engel Cory Schwartz Andrew Flores Ian Wheeldon

BACKGROUND The thermotolerant yeast Kluyveromyces marxianus shows promise as an industrial host for the biochemical production of fuels and chemicals. Wild-type strains are known to ferment high titers of ethanol and can effectively convert a wide range of C5, C6, and C12 sugars into the volatile short-chain ester ethyl acetate. Strain engineering, however, has been limited due to a lack of adv...

Journal: :Zhong xi yi jie he xue bao = Journal of Chinese integrative medicine 2005
Zhen-Xiao Sun Ying-Hui Zhang Shuang Cheng Qing-Wen Ma Shan-Li Guo Jin-Bao Zhang

OBJECTIVE To screen the anti-tumor fraction of ethanol extracts from Thymus quinquecostatus Celak and investigate its anti-tumor effect on human leukemia cell line. METHODS Ethyl acetate, n-butanol and acetone fractions were separated from the ethanol extracts of wild Thymus quinquecostatus Celak. Growth inhibiting effects of these extracts on human leukemia cell lines K562 and HL-60 were det...

Journal: :iranian journal of pharmaceutical sciences 0
mahmoodreza moein department of pharmacognosy, and pharmaceutical sciences research center, faculty of pharmacy, shiraz university of medical sciences, shiraz 71345, iran. soheila moein department of biochemistry, faculty of medicine, and infectious disease research center, hormozgan university of medical sciences, bandar abbas 79149-64153, iran.

butyl-hydroxytoluene (bht) is one of the major synthetic antioxidants with a wide range usage. replacement of artificial antioxidants with natural antioxidants is highly considered. in this research, the antioxidant activity of juniperus excelsa was investigated by using reducing power, dpph radical scavenging and inhibition of lipid peroxidation. also, the amounts of phenolic and flavonoid com...

Background and purpose: This study was designed to determine the protective effect of flower and leaf ethyl acetate extract of Viola odorata L. against ethanol induced chronic nephrotoxicity in male Wistar rats. Materials and methods: Ethyl acetate extracts of flower and leaf of V. odorata were prepared. Then, Total phenolic and flavonoid contents of extracts were determined. Animals were rand...

Journal: :African journal of traditional, complementary, and alternative medicines : AJTCAM 2013
Bo Liu Jinlan Liu Jing Chen Dongmei Zhu Huajiang Zhou Ximing Wang

The objective of the present study was to investigate the anticancer activity of Chinese medicine Caulis Spatholobi extract on multicentric osteosarcoma cells. Ultraviolet spectrophotometry was used to determine the total flavonoid content in each sample; vanillin sulphuric acid assay was used to determine the condensed tannin content in each sample; and the varying degrees of inhibitory activi...

2014
Shivali Arora Prashant Srivastava

Reactive distillation is the combination of reaction and separation in a same column. It is an attractive option whenever liquid phase reactant is in large excess. The energy requirement of the conventional column is very high and requires large recycling costs. RD column works close to the stoichiometric feed conditions thereby eliminating recycling costs and increases the efficiency of the co...

2010
M Sangeetha K Kousalya R Lavanya Cherukuru Sowmya D Chamundeeswari C Uma Maheswara Reddy

Clerodendron inerme belongs to the family Verbenaceae found in southern region of India, which is used in the treatment of Veneral diseases, Rheumatism, Elephantiasis and Intermittent fever. The qualitative phytochemical screening showed the presence of alkaloid, steroids, phenols, flavanoids, tannins, carbohydrates, fixed oils and volatile oils. The Petroleum ether, Chlorofrom, Ethyl acetate, ...

2016
Petrina Kapewangolo Michael Knott Regina E. K. Shithigona Sylvia L. Uusiku Martha Kandawa-Schulz

BACKGROUND Hoodia gordonii products are widely commercialized for anti-obesity purposes; however, minimal research is available on the other health properties demonstrated by this popular herbal plant. METHODS H. gordonii crude extracts (ethanol and ethyl acetate) were assayed for in vitro anti-HIV-1 protease (PR), reverse transcriptase (RT) and integrase activity. The 2,2-diphenyl-1-picrylhy...

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