Biodegradation of Benzo(a)pyrene in Contaminated Soil: Plant and Microorganism Contributions from Isotope Tracing.

Biological degradation effectively removes benzo(a)pyrene (BaP) from contaminated soil; however, knowledge regarding the contributions of plant absorption, microbial degradation, and volatilization to BaP removal remains limited. In this study, the BaP removal pathway in contaminated soil was investigated. The structural evolution of the microbial community in contaminated soil was revealed using a comparative experimental study.

Chemical constituents from the roots of .

Phytochemical research on the roots of led to the isolation of a new aporphine alkaloid, cathafiline B (), a new butanolide derivative, illigeralactone A (), together with six known compounds, namely cathafiline (), cassythincine (), bulbocapine (), actinodaphine (), hernangerine () and isolincomolide D (). The chemical composition of was reported for the first time. Compounds , and showed no α-glucosidase inhibition activity at 100 μg/mL.

Improvement of peptoid chiral stationary phases by modifying the terminal group of selector.

The role of a terminal group of a peptoid selector in a chiral separation was investigated. Six chiral stationary phases (CSPs) with the terminal groups replaced by achiral alkyl groups (n-butyl, t-butyl and diisopropyl) and chiral groups ((1R, 2R)-2-aminocyclohexyl phenylcarbamate, N'-phenyl-L-proline amide and N'-phenyl-L-leucine amide) were synthesized. Achiral terminal groups with different steric hindrances did not broaden the enantioselectivity, but improved the separation factors for some analytes, probably due to the improvement of interactions between the analytes and peptoid chain.