Compositional changes in yuzu (Citrus junos) steam-distilled oil and effects of antioxidants on oil quality during storage

Changes in 44 compounds of yuzu (Citrus junos Sieb. ex Tanaka) steam-distilled peel oil (SDO) and possible artifacts that accrue during storage at 25°C were investigated after 1, 2, 3, 4, 8 and 12 weeks. Changes in SDO composition during storage took place more rapidly than in cold-pressed oil. Tota...

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Veröffentlicht in:Food Science and Technology Research 2010, Vol.16(1), pp.51-58
Hauptverfasser: Kashiwagi, Takehiro, Phi, Nguyen Thi Lan, Sawamura, Masayoshi
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Sawamura, Masayoshi
description Changes in 44 compounds of yuzu (Citrus junos Sieb. ex Tanaka) steam-distilled peel oil (SDO) and possible artifacts that accrue during storage at 25°C were investigated after 1, 2, 3, 4, 8 and 12 weeks. Changes in SDO composition during storage took place more rapidly than in cold-pressed oil. Total monoterpene hydrocarbons decreased markedly, with major losses of limonene and γ-terpinene and notable increases in p-cymene, as well as alcohols. Bicyclogermacrene, the main sesquiterpene hydrocarbon of the fresh oil, practically disappeared. (-)-Spathulenol, the main artifact, was converted from bicyclogermacrene. Antioxidants such as α-tocopherol, β-carotene and 2,6-di-tert-butyl-4-hydroxytoluene (BHT) slowed the formation of oxidation products, such as p-cymene, (-)-spathulenol by inhibiting the formation of oxidative products. This suggests that the antioxidants can be used to maintain yuzu oil quality.
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subjects ambient temperature
antioxidant
antioxidants
Citrus junos
citrus peels
distillation
essential oil
essential oils
food preservation
food storage
fruit extracts
fruits (food)
indigenous species
monoterpenoids
oxidative stability
polyphenols
preserving method
spathulenol
steaming
storage temperature
storage time
volatile compounds
title Compositional changes in yuzu (Citrus junos) steam-distilled oil and effects of antioxidants on oil quality during storage
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