title: Slight Fermentation with Lactobacillus fermentium Improves the Taste (Sugar:Acid Ratio) of Citrus (Citrus reticulata cv. chachiensis) Juice.
abstract: The aim of this study was to evaluate the hypothesis that fermentation with Lactobacillus fermentium, which can metabolize citric acid, could be applied in improving the taste (sugar:acid ratio) of citrus juice. During fermentation, the strain of L. fermentium can preferentially utilize citric acid of citrus (Citrus reticulata cv. Chachiensis) juice to support the growth without the consumption of sugar. After 6 h of fermentation with L. fermentium at 30 °C, the sugar:acid ratio of citrus juice increased to 22:1 from 12:1, which resulted in that the hedonic scores of sweetness, acidity and overall acceptability of fermented-pasteurized citrus juice were higher than the unfermented-pasteurized citrus juice. Compared with unfermented-pasteurized citrus juice, the ORAC value and total amino acid showed a reduction, and no significant change (P > 0.05) in the L*, a*, b*, total soluble phenolics and ascorbic acid (Vc) content in the fermented-pasteurized citrus juice was observed as compared with unfermented-pasteurized citrus juice. Hence, slight fermentation with L. fermentium can be used for improving the taste (sugar:acid ratio) of citrus juice with the well retaining of quality.
authors.affiliation: Authors are with Sericultural & Agri-Food Research Inst. Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, China.
authors.forename: Yuanshan
authors.initials: Y
authors.lastname: Yu
authors.affiliation: Authors are with Sericultural & Agri-Food Research Inst. Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, China.
authors.forename: Gengsheng
authors.initials: G
authors.lastname: Xiao
authors.affiliation: Authors are with Sericultural & Agri-Food Research Inst. Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, China.
authors.forename: Yujuan
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Authors are with Sericultural & Agri-Food Research Inst. Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, China.
authors.forename: Jijun
authors.initials: J
authors.lastname: Wu
authors.affiliation: Authors are with Sericultural & Agri-Food Research Inst. Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, China.
authors.forename: Manqin
authors.initials: M
authors.lastname: Fu
authors.affiliation: Authors are with Sericultural & Agri-Food Research Inst. Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Wen
mesh_terms: D001205:Ascorbic Acid / Q000378:metabolism*; D002241:Carbohydrates; D002957:Citrus / Q000737:chemistry*; D005285:Fermentation; D005516:Food Microbiology; D005638:Fruit / Q000737:chemistry*; D000067030:Fruit and Vegetable Juices / Q000032:analysis / Q000382:microbiology; D006801:Humans; D052197:Limosilactobacillus fermentum / Q000378:metabolism*; D061352:Pasteurization; D010636:Phenols / Q000032:analysis; D013649:Taste
chemical_list: D002241:Carbohydrates; D010636:Phenols; D001205:Ascorbic Acid
keywords: citrate metabolism; citrus juice; fermentation; lactic acid bacteria; quality