期刊
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
卷 -, 期 -, 页码 -出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10408398.2022.2129581
关键词
analytical techniques; citrus juice; formation pathways; off-flavor compounds; processing and storage condition
资金
- Fundamental Research Funds for the Central Universities [2662020SPPY002]
- National Natural Science Foundation of China [31671824]
- Key Research and Development Program in Hubei Province [2020BBA049]
This review comprehensively discusses the off-flavor compounds in citrus juice, including their formation pathways, methods to inhibit off-flavor formation, and odor assessment techniques. It also proposes possible precursors of off-flavor in citrus juice and suggests future research directions.
As the most widespread juice produced and consumed globally, citrus juice (mandarin juice, orange juice, and grapefruit juice) is appreciated for its attractive and distinct aroma. While the decrease of characteristic aroma-active compounds and the formation of off-flavor compounds are easy to occur in processing and storage conditions. This review provides a comprehensive literature of recent research and discovery on citrus juice off-flavor, primarily focusing on off-flavor compounds induced during processing and storage (i.e., thermal, storage, light, oxygen, package, fruit maturity, diseases, centrifugal pretreatment, and debittering process), formation pathways (i.e., terpene acid-catalyzed hydration, caramelization reaction, Maillard reaction, Strecker degradation, and other oxidative degradation) of the off-flavor compounds, effective inhibitor pathway to off-flavor (i.e., electrical treatments, high pressure processing, microwave processing, ultrasound processing, and chemical treatment), as well as odor assessment techniques based on molecular sensory science. The possible precursors (terpenes, sulfur-containing amino acids, carbohydrates, carotenoids, vitamins, and phenolic acids) of citrus juice off-flavor are listed and are also proposed. This review intends to unravel the regularities of aroma variations and even off-flavor formation of citrus juice during processing and storage. Future aroma analysis techniques will evolve toward a colorimetric sensor array for odor visualization to obtain a marker of off-flavor in citrus juice.
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