제조방법에 따른 도토리 차의 이화학적 특성
Physicochemical characteristics of acorn tea by processing methods
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초록
This study was carried out to investigate the physicochemical and quality characteristics of acorn and acorn tea by processing methods. The moisture contents of acorn tea processed roasting was lower than those of others, and acorn tea processed by three steaming and drying was highest in among. Carbohydrate and crude lipid, crude ash contents of the acorn tea processed by roasting was higher than those of others. Crude protein contents of the natural acorn was higher than those of others. Soluble protein content of acorn tea produced by three steaming and drying was 12.74 mg/g, where was highest than that of the acorn tea. Reducing sugar content of natural acorn was 64.3 mg/g, higher than that of the acorn tea. The L values of natural acorn was higher than those of others, but steaming and roasting acorn tea were lower than those of others. The a, and b values of natural acorn was higher than those of others. Total polyphenol and flavonoid contents of acorn tea processed by three steaming and drying was 41.15, 2.78 mg/g, where was higher than that of the acorn tea. Sensory test was the acorn tea produced by three steaming and drying showed the best score in preference.
Abstract
This study was carried out to investigate the physicochemical and quality characteristics of acorn and acorn tea by processing methods. The moisture contents of acorn tea processed roasting was lower than those of others, and acorn tea processed by three steaming and drying was highest in among. Carbohydrate and crude lipid, crude ash contents of the acorn tea processed by roasting was higher than those of others. Crude protein contents of the natural acorn was higher than those of others. Soluble protein content of acorn tea produced by three steaming and drying was 12.74 mg/g, where was highest than that of the acorn tea. Reducing sugar content of natural acorn was 64.3 mg/g, higher than that of the acorn tea. The L values of natural acorn was higher than those of others, but steaming and roasting acorn tea were lower than those of others. The a, and b values of natural acorn was higher than those of others. Total polyphenol and flavonoid contents of acorn tea processed by three steaming and drying was 41.15, 2.78 mg/g, where was higher than that of the acorn tea. Sensory test was the acorn tea produced by three steaming and drying showed the best score in preference.
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