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KMID : 0380020100250020137
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Korean Journal of Biotechnology and Bioengineering
2010 Volume.25 No. 2 p.137 ~ p.141
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Development of Coating Process of Citric Acid Using Vegetable Oil
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Kim Bok-Hee
Kim Dong-Man
Lee Sang-Hwa
Shin Hyun-Jae
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Abstract
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Citric acid is a natural preservative and is used to add a sour taste to foods and soft drinks. For the preparation of stable food additives of citric acid, a coating process using vegetable oil was developed. Coating materials used were purified soy bean oil and carnauba wax. The yield of coated citric acid was up to 95% in both cases. The contents of coating materials was 20~33% in the total composition and the coating efficiency was 95.2 ± 0.01%. The surface of coated citric acid was much smoother and more homogeneous than that of original citric acid according to SEM data. The coated citric acid can be used to as a stable food additive and also would be applied to nutraceuticals and cosmetic ingredients.
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KEYWORD
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citric acid, vegetable oils, carnauba wax, coating process, granulation
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