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首页> 外文会议>International citrus congress >Relationship between Internal Gases, Ethanol Content and Physico-chemical Changes of Coated Tangerine Fruit cv. ' Sai Nam Pung'
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Relationship between Internal Gases, Ethanol Content and Physico-chemical Changes of Coated Tangerine Fruit cv. ' Sai Nam Pung'

机译：包被的橘果内部气体，乙醇含量与理化变化之间的关系。赛南蓬

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摘要

Tangerine fruit cv. Sai Num Pung' were coated with two microemulsions: polyethylene and candelilla in ratios 75:25 and 60:40 (75% PE and 60% PE) and two commercial citrus coatings (commercial 1 and commercial 2). Coated and washed non-coated fruit (control) were stored in plastic baskets at (25 ±2) °C and (87 ±4)% RH. The accumulation of ethanol content increased with storage time. Coated fruit with commercial 1 and commercial 2 had ethanol content over 1 500 ppm which imparted off-flavor after 11 and 16 days, respectively and other coatings after 21 days in storage. Non-coated fruit had the highest percentage of weight loss and internal O2 but the lowest ethanol content and internal CO2. Addition of candelilla wax to polyethylene decreased the percentage of weight loss and internal O2 but increased internal CO2 and ethanol content. Coating treatments did not influence on total soluble solids, titratable acidity, pH values or vitamin C content of tangerine juice. However, there were significant changes during storage. Titratable acidity and vitamin C content of all coated fruit decreased and total soluble solids and pH values increased during storage.
机译：橘果简历。 Sai Num Pung'涂有两种微乳液：比例为75:25和60:40（75％PE和60％PE）的聚乙烯和小烛树（candelilla）和两种市售柑橘类涂料（商品1和商品2）。包衣和洗涤过的未包衣的水果（对照）在（25±2）°C和（87±4）％RH的塑料筐中存储。乙醇含量的积累随储存时间的增加而增加。带有商品1和商品2的被覆水果的乙醇含量超过1500 ppm，分别在存放11天和16天后散发出异味，而在储存21天后产生其他覆层。未包膜水果的失重百分比和内部O2最高，但乙醇含量和内部CO2最低。向聚乙烯中添加小烛树蜡可减少重量减少和内部O2的百分比，但会增加内部CO2和乙醇的含量。包衣处理不会影响橘汁的总可溶性固形物，可滴定的酸度，pH值或维生素C含量。但是，在存储过程中发生了重大变化。在储存过程中，所有带涂层水果的可滴定酸度和维生素C含量降低，总可溶性固形物和pH值升高。

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