인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Abstract This work explored the physicochemical composition, stability and encapsulation efficiency of bioactive compounds of the hydroalcoholic extracts of Black Quinua Collana. Physicochemical characterization indicated low moisture and water activity, stabilizing grain, and extract indicated enriched amounts of soluble solids and bioactives. A synergistic interaction between temperature and pH was indicated in response surface analysis to affect bioactive stability, with greater retention at 40oC and pH 4.5, and decreased stability at near-neutral pH. Betacyanins showed a high pH sensitivity relative to the betaxanthins that were broadly stable. The presence of phenolic antioxidants was affected by both pH and thermal stress with gallic acid showing the greatest impact of both pH and thermal stress whereas no significant effect of pH was observed on catechin stability. Optimized wall materials (3% gelatin:7% maltodextrin) combined with spray drying at 160o C yielded the greatest encapsulation efficiencies (>90 %) and produced spherical microcapsules with unimodal particle size distribution (~8.7 μm). Samples showed structural integrity by scanning electron microscopy, and the wall composition was polysaccharide-protein, with high carbon and oxygen content by EDX. Colorimetry showed that moderate temperatures led to the better preservation of pigments, as would be expected with that of betalains. Altogether, the results indicate that the stability of bioactives obtained by controlled extraction and microencapsulation ensures their improved functional properties, which can be used in nutraceuticals and functional food formulas.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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