Machine learning based age-authentication assisted by chemo-kinetics: Case study of strong-flavor Chinese Baijiu.

The aged Chinese liquor, Baijiu, is highly valued for its superior organoleptic qualities. However, since age-authentication method and aging-mechanism elucidation of Baijiu is still in the exploratory stage, high-quality aged Baijiu is often replaced by lower-quality, less-aged product with fraudulent mislabeling. Authentic high-quality strong-flavor Baijiu was analyzed by gas chromatography-mass spectrometry.

Alkaloids and phenylpropanoid from Rhizomes of L.

A new bis-indole alkaloid, named arundaline (), a new phenylpropanoid, named arundalcohol (), and four known alkaloids, -acetyltryptamine (), trans--(p-coumaroyl)serotonin (), trans--feruloylserotonin (), and tuberosine B (), were isolated from 70% aqueous ethanol extracts of the rhizomes of L. Their structures were elucidated by spectroscopic analysis and comparison of the data with literature values. Compounds - were isolated from the genus for the first time.

[Studies on identification of Phragmitis Rhizoma and its counterfeits].

The study aims to explore the main differential characteristics of Phragmites Rhizoma and its counterfeits (rhizomes of Arundo donax, Triarrhena lutarioriparia and Miscanthus sinensis) and provide experimental basis for the reasonable applications of gramineous plants through system research and comparison of plant morphogenesis, character, transverse organization characteristics and powder microscopic characteristics.

New Acorane-Type Sesquiterpene from Acorus calamus L.

A new sesquiterpene, named neo-acorane A (), and two known ones, acoric acid () and calamusin D (), were isolated from a 95% ethanol extract of the rhizome parts of L. Their structures were elucidated by spectroscopic methods, and the absolute configurations were determined by single-crystal X-ray diffraction analysis. Compounds and are nonisoprenoid sesquiterpenoids, likely biosynthesized from an acorane-type sesquiterpene by oxidative fission of the six- or five-membered ring.

[Chemical Constituents from Fruit Dregs of Rhus chinensis( Ⅱ)].

Objective: To investigate the constituents from the fruit dregs of Rhus chinensis.

Methods: The constituents were isolated and purified by chromatography on silica gel,Sephadex LH-20,RP-C18 and Pre-TLC and recrystalization. The structures were identified on the basis of the chemical evidence,spectroscopic data.

[Chemical constituents of Acori Calami Rhizoma from Hunan Province].

Objective: To study the chemical components from the ethanol extract of Acori Calami Rhizoma from Hunan Province.

Methods: Components were isolated and purified through various chromatographic methods and recrystallization, and identified by spectroscopic data.

Results: Ten compounds were isolated and identified as follows: heptadecanoic acid(1), monopentadecanoin(2), syringic acid(3), aurantiamide acetate(4), monononadecanoin(5),tatarine A(6),tatanan C(7),cerevisterol(8),2 ,6-dioxopiperidin-3-yl acetate(9) and palmatine(10).

Wls promotes the proliferation of breast cancer cells via Wnt signaling.

The Wnt secretion protein Wntless (Wls)/GPR177 has been reported to be involved in the development of several human cancers. However, the biological significance of Wls in breast cancer progression has not been clarified. In this study, we show for the first time that Wls is an important molecule related to breast cancer.