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11.
Virayu Suthiphasilp Wisanu Maneerat Raymond J. Andersen Stephen G. Pyne Chatchai Muanprasat Sawinee Seemakhan 《Natural product research》2019,33(20):2945-2950
A phytochemical investigation of the fruit and root extracts of Micromelum integerrimum resulted in the isolation and identification of a new compound, integerravone (1), together with 23 known compounds (2–24). Their structures were characterized by spectroscopic methods as well as comparisons made from the literature. Compounds 2, 3–15, 17–18 and 20–23 were evaluated for their cytotoxicities against the colon cancer cell line, HCT116. All of them were inactive at 50?µM. Most of the phenolic compounds were evaluated for their antioxidant activity using the DPPH assay. Compounds 14 and 22–24 showed antioxidant activity with IC50 values ranging from 24.83-135.05?µM. 相似文献
12.
Two types of biosurfactant (BS)-producing bacteria, Bacillus licheniformis TR7 and Bacillus subtilis SA9, were isolated from mangrove sediment in the south of Thailand. The BS production was done by using only molasses as
a whole medium for growth and production. Under optimized conditions, the yields of TR7 and SA9 BS were found to be 3.30 and
3.78 g/l, respectively. It could reduce the surface tension of pure water to 28.5 and 29.5 mN/m, with the critical micelle
concentrations of about 10 and 30 mg/l, respectively. Good thermal, pH, and salt stability were exhibited. Both BSs could
recover oil more effectively than the two synthetic surfactants. In addition, TR7 and SA9 BS could enhance the solubility
of polyaromatic hydrocarbons (PAHs). Thus, these BSs have the potential for the removal of oil and PAHs from the combined
contaminated environment and facilitate its bioremediation. These studies indicate that molasses, as a renewable, relatively
inexpensive and easily available resource, can be used for important biotechnological processes. 相似文献