Postharvest quality control of xanthophyll content in marigold
1997
Siriphong Pattanavibul | Somsak Chaimongkol | Anawat Suwannakul | Sodsri Neamprem | Yuwadee Rattanachai | Chitra Sartpeth | Manat Jamjumroon | Nampeth Chaiwipha | Cheuan Dongkratok
Objective of this study is to develop postharvest treatment for Marigold flower in order to minimize losses of xanthophylls during subsequent processing steps. Stabilization of xanthophyll pigment by fermentation of freshly harvested Marigold flowers in various solvent solutions were investigated. Marigold flower after harvested were fermented in a solution of sodium chloride, formic acid, acetic acid or sulfuric acid at various concentrations ranging from 0.5, 1.0 to 2.0 percent (v/v). Tap water was used as a control solution. After 4 weeks of fermentation, flowers were oven dried at 70 degree celsius for 15 to 17 hr, ground and analysed for xanthophyll content. Lowest xanthophyll content was found in the treatment without fementation at 4.6 g/kg. Higher xanthophyll content were found in all fermentation treatments at all concentrations. Highest xanthophyll content, 7.9 g/kg, was obtained with acetic acid treatment at 0.5 percent concentration.
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