Growth and Ginsenosides Content of Ginseng Sprouts under Far-red and UV-B Light Treatments in Plant Factory ; 식물공장에서 far-red 및 UV-B 광 처리에 따른 새싹 인삼의 생육과 진세노사이드 함량

학위논문 (석사) -- 서울대학교 대학원 : 농업생명과학대학 농림생물자원학부, 2021. 2. 손정익. ; Ginseng sprouts have a high content of saponins (ginsenosides) in their shoots, and their value as medicinal vegetables is increasing. However, there are no standardized cultivation guidelines for ginseng sprouts for raw foods, and the effect of light quality on growth and ginsenoside content in ginseng sprouts is not clear. The objective of this study was to analyze the growth and ginsenoside content of ginseng sprouts aeroponically grown in plant factories under far-red and ultraviolet-B (UV-B) light treatments. One-year-old ginseng seedlings (Panax ginseng C. A. Meyer) were transplanted into a plant factory with a photosynthetic photon flux density of 50 μmol m-2 s-1 using light-emitting diodes of red:blue = 1:1. Based on the phytochrome photostationary state value of solar radiation equal to 0.72, different far-red light treatments with 18 µmol m-2 s-1 for 16 h per day were applied from 0, 6, and 12 days after transplanting (DAT). For UV-B light treatments, different UV-B radiation exposure times with 0.1 W m-2 dose were applied for 1, 2, and 3 h on the day before harvest. Under normal growth conditions, suitable harvest date for aeroponically grown ginseng sprouts was determined to be 18 DAT due to a notable increase in stem hardness. Under additional far-red light, the electron transport rates of photosystems II and I of ginseng leaves increased, and nonphotochemical quenching decreased only at higher light intensities. Far-red light treatments significantly lowered the stem hardness but did not induce significant differences in other growth factors or ginsenoside contents, regardless of duration. Under additional UV-B radiation, no significant differences in photochemical characteristics or ginsenoside content were observed. As a result, additional far-red lighting can be utilized to maintain low stem hardness and extend the cultivation period. ; 새싹 인삼은 지상부의 사포닌 함량이 높아 약용 채소로서의 가치가 높다. 그러나 새싹 인삼의 표준화된 재배 가이드라인이 없으며 새싹 인삼의 생육 및 진세노사이드 함량 증진에 관련된 ...