Regulation of the Microbiota in Chinese Liquor Fermentation Process

Wu, Qun; Zhu, Yang; Xu, Yan

doi:10.1007/978-981-19-2195-7_15

Cited by 1 publication

(1 citation statement)

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“…The compound observed at m / z 145.122282 was tentatively identified as ethyl hexanoate (ethyl caproate), which possessed the highest relative abundance in all studied samples. Ethyl hexanoate has been reported as the most frequently identified organic ester in different baijiu liquors . It is especially abundant in the strong aroma baijiu, for which it gives fruity notes (e.g., apple, pineapple, and banana).…”

Section: Results and Discussionmentioning

confidence: 99%

High-Resolution Mass Spectrometry-Based Chemical Fingerprinting of Baijiu, a Traditional Chinese Liquor

Dou,

Mäkinen,

Jänis

2024

ACS Omega

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Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry, coupled with electrospray ionization (ESI) or atmospheric-pressure photoionization (APPI), was employed for chemical fingerprinting of baijiu, a traditional Chinese liquor. Baijiu is the most consumed distilled alcoholic beverage globally, with over 10 billion liters sold annually. It is a white (transparent) spirit that exhibits similarities to dark spirits such as whisky or rum in terms of aroma and mouthfeel. In this study, direct-infusion FT-ICR mass spectrometry was used to analyze 10 commercially available baijiu liquors, enabling the examination of both volatile and nonvolatile constituents without the need for tedious sample extractions or compound derivatizations. The chemical fingerprints obtained by FT-ICR MS revealed substantial compositional diversity among different baijiu liquors, reflecting variations in the raw materials and production methods. The main compounds identified included a variety of acids, esters, aldehydes, lactones, terpenes, and phenolic compounds. The use of ESI and APPI provided complementary compositional information; while ESI demonstrated greater selectivity toward polar, aliphatic sample constituents, APPI also ionized semipolar and nonpolar (aromatic) ones.

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Section: Results and Discussionmentioning

confidence: 99%