KMID : 0380620180500060636
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Korean Journal of Food Science and Technology 2018 Volume.50 No. 6 p.636 ~ p.641
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Comparison of the stability between branched-chain amino acid (BCAA)-coated liposome and double emulsion
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Lee Yun-Jung
Lee Sang-Yoon Shin Hye-Rin Kang Gu-Hyun Wi Gi-Hyun Ko Eun-Young Cho Young-Jae Choi Mi-Jung
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Abstract
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This study was conducted to compare the stability between branched-chain amino acid (BCAA)-encapsulated liposome and double emulsion (DE). Liposome was produced by high-speed homogenization and ultrasonication whereas DE was prepared by homogenizing with surfactants. All samples were fixed at pH 4 and 7 and stored at 4, 25, and 40¡ÆC for 5 days. Encapsulation efficiency and cumulative release rate were measured under 4¡ÆC and at 25¡ÆC. The results showed that the size of BCAA-coated liposome was greater at pH 7 than at pH 4. The zeta-potential value of BCAA-coated liposome was greater at pH 4 than at pH 7. It was supposed that the negatively charged liposomes attracted the positively charged BCAAs at pH 4 resulting in the formation of the vesicle with smaller size. Particle size of DE was smaller than 100 µm. Encapsulation efficiencies of BCAA in DE or liposome were over 97%, approximately, and the cumulative release rates of them were below 30% for 5 days.
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KEYWORD
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anched-chain amino acid, double emulsion, liposome, encapsulation
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