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2022 Vol.35, Issue 4 Preview Page
Effects of Freeze Drying, Room-temperature Drying, and Room-temperature Drying after Roasting on Volatile Compounds Sugar Content, Flavonoids, and Antioxidant Activity of Hallabong (Citrus sphaerocarpa Tanka nom. nud.) Peel Tea

동결건조, 상온 건조, 볶음 후 상온 건조가 한라봉(Citrus sphaerocarpa Tanka nom. nud.) 과피차의 향기 성분과 당도 및 플라보노이드, 항산화 활성에 미치는 영향

Min-Gyeong Kim1†
,
Min-Ju Kwon2†
,
Kang-Mo Ku3*
김 민경1†
,
권 민주2†
,
구 강모3*
1Graduate Student, Department of Horticulture, Chonnam National University, Gwangju 61186, Korea
2Undergraduate Student, Department of Horticulture Biotechnology, Chonnam National University, Gwangju 61186, Korea
3Professor, Department of Horticulture Biotechnology, Chonnam National University, Gwangju 61186, Korea
1전남대학교 원예학과, 대학원생
2전남대학교 원예생명공학과, 학부생
3전남대학교 원예생명공학과, 교수
*Corresponding Author
†These authors contributed equally to this work.
1 August 2022. pp. 455-463
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Abstract

The effects of freeze-drying (FD), room-temperature drying (RD), and room-temperature drying after roasting (RDAR) on the volatile organic compounds (VOCs), sugar content, flavonoids, and antioxidant activity of Hallabong peel tea were tested. This experiment was conducted to collect a basic information for developing of peel tea. FD samples showed lower total soluble solids and VOCs than other drying treatments. RDAR samples showed a significant difference in VOCs and visual color of FD samples. The reduced VOCs in FD samples was caused by freeze drying treatment; identical VOCs composition of hallabong peel was detected from condensed ice of freeze-drying machine. Metabolomics analysis showed no difference among three drying treatments. In addition, antioxidant activity and total phenolic compounds were not significantly different from three different drying treatments. Thus, RD or RDAR is a suitable drying method for hallabong peel tea rather than FD method in terms of VOCs and economical reasons.

Keywords
DPPH
Flavonoid
Hallabong
Tea
Volatile components
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Information
  • Publisher :The Plant Resources Society of Korea
  • Publisher(Ko) :한국자원식물학회
  • Journal Title :Korean Journal of Plant Resources
  • Journal Title(Ko) :한국자원식물학회지
  • Volume : 35
  • No :4
  • Pages :455-463
  • Received Date : 2022-03-14
  • Revised Date : 2022-04-13
  • Accepted Date : 2022-04-13
  • DOI :https://doi.org/10.7732/kjpr.2022.35.4.455
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