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논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- Hae Soo Kwak
- 발행연도
- 2014
- 저작권
- 세종대학교 논문은 저작권에 의해 보호받습니다.
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Chapter Ⅰ. Optimizations of microencapsulated tomato extract powder using response surface methodology
Abstract
This study was conducted to investigate the optimum conditions of oil in water (O/W) microencapsulated tomato extract powder using response surface methodology (RSM) by central composite design. The tomato extracts as core material and maltodextrin as coating material were used in preparation of microemulsion using high speed homogenizer. The microencapsulation efficiency of the tomato extract powder was investigated with respect to three independent variable ratios of tomato extracts to medium-chain triglyceride (MCT) (0.5:9.5-2:8, w/w), concentration of emulsifier (0.5-1%, w/v) and ratio of core material to coating material (1:5-1:9). The results were found that the optimal conditions for tomato extract microemulsion were 1:9 as the ratio of tomato extracts to MCT, 0.92% concentration of emulsifier and 1:8 as the ratio of core material to coating material. The optimal yield of microencapsulation of tomato extracts was 99.76% and the response surface model for microencapsulation efficiency indicated 96.58% R-Squared statistic. The average size of the powdered microencapsulates was 10㎛ under optimum conditions. Based on the findings obtained from present study, it is suggested that microencapsulated tomato extract powder has high yield and is useful for functional ingredient.
Key words: Tomato extracts, microencapsulation, response surface methodology
Abstract
This study was conducted to investigate the optimum conditions of oil in water (O/W) microencapsulated tomato extract powder using response surface methodology (RSM) by central composite design. The tomato extracts as core material and maltodextrin as coating material were used in preparation of microemulsion using high speed homogenizer. The microencapsulation efficiency of the tomato extract powder was investigated with respect to three independent variable ratios of tomato extracts to medium-chain triglyceride (MCT) (0.5:9.5-2:8, w/w), concentration of emulsifier (0.5-1%, w/v) and ratio of core material to coating material (1:5-1:9). The results were found that the optimal conditions for tomato extract microemulsion were 1:9 as the ratio of tomato extracts to MCT, 0.92% concentration of emulsifier and 1:8 as the ratio of core material to coating material. The optimal yield of microencapsulation of tomato extracts was 99.76% and the response surface model for microencapsulation efficiency indicated 96.58% R-Squared statistic. The average size of the powdered microencapsulates was 10㎛ under optimum conditions. Based on the findings obtained from present study, it is suggested that microencapsulated tomato extract powder has high yield and is useful for functional ingredient.
Key words: Tomato extracts, microencapsulation, response surface methodology
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