김종예 (강원대학교)

한빛사논문

조회196

강원대학교

Carbohydr. Polym., Available online 15 February 2024 | https://doi.org/10.1016/j.carbpol.2024.121950 Preparation of catechin-starch nanoparticles composites and its application as a Pickering emulsion stabilizer

Jae Young Park ^a, Dong-Hwa Cho^b, Dan Jung Choi ^c, So Yeon Moon ^c, Eun Young Park ^a, Jong-Yea Kim ^c

^aDepartment of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea

^bEversummer Laboratory, Daegu Catholic University, Gyeongsan 38430, Republic of Korea

^cDepartment of Food Science and Biotechnology, Kangwon National University, Chuncheon 24341, Republic of Korea

Corresponding authors : Eun Young Park, Jong-Yea Kim

Abstract

Starch is a biopolymer commonly used for nanoparticle synthesis. Starch nanoparticles (SNPs) have potential as encapsulation agents and Pickering emulsion stabilizers. Here, we prepared SNPs by dry heating under mildly acidic conditions to encapsulate catechin. Catechin (30 mg) and SNPs (50-150 mg) were dispersed in distilled water and freeze-dried to prepare catechin-SNP composites. Isothermal titration calorimetry and Fourier-transform infrared spectroscopy revealed that the binding of catechin to SNP may involve spontaneous hydrogen bonding and hydrophobic interactions. SNPs exhibited encapsulation efficiency for catechin, with 100 % catechin retention when 150 mg of SNP was used to prepare the composites. The catechin-SNP composites had a particle size of 54.2-74.9 nm. X-ray diffraction analysis revealed the formation of small amounts of inclusion complexes in catechin-SNP composites. As the amount of SNPs added for encapsulation increased, the catechin encapsulated in the SNP composites exhibited higher water solubility and UV stability than the pure catechin. The catechin-SNP composite with 150 mg of catechin exhibited the highest contact angle (51.37°) and formed a stable emulsion without notable droplet size changes. Therefore, catechin-SNP composites improved the encapsulation efficiency, water-solubility, stability of catechins, and Pickering emulsion stability.

논문정보

형식Research article
게재일2024년 02월 (BRIC 등록일 2024-03-11)
연구진국내 연구진
분야 생명과학 > 식품학

댓글 작성 로그인

CV 열람하기

연락처 보기