载人航天
載人航天
재인항천
MANNED SPACEFLIGHT
2014年
4期
386-392
,共7页
LED光质%紫背天葵%萜烯类%酚类
LED光質%紫揹天葵%萜烯類%酚類
LED광질%자배천규%첩희류%분류
LED light quality%Gynura Bicolor DC.%terpenes%phenols
为了探索促进紫背天葵在受控环境中更好地积累生物活性成分的有效光质条件，采用3种LED光源（ R60B30G10/60％红光＋30％蓝光＋10％绿光，R70B20G10/70％红光＋20％蓝光＋10％绿光，R60B20G20/60％红光＋20％蓝光＋20％绿光）研究了光质条件对紫背天葵次级代谢物（挥发油和酚类）的影响。结果表明：与R70B20G10光质相比，R60B20G20光质显著增加了萜烯类物质（α，β-石竹烯）的积累，降低了醛类成分（绿叶挥发物）在香气物质中的比例，而R60B30G10与此结果相反；与其它光质相比，R60B30G10光质增加了总花色苷和总黄酮的含量，而在R70B20G10和R60B2OG20光质条件下这些物质的含量没有显著差异；与其它光质相比，R70B20G10光质增加了β-胡萝卜素积累和植物叶片提取物的抗氧化活性（DPPH），而R60B20G20光质则显著降低了β-胡萝卜素的含量。因此，R70B20G10为适合于紫背天葵积累更多有用次级代谢产物及提高其营养和药用价值的光质条件。
為瞭探索促進紫揹天葵在受控環境中更好地積纍生物活性成分的有效光質條件，採用3種LED光源（ R60B30G10/60％紅光＋30％藍光＋10％綠光，R70B20G10/70％紅光＋20％藍光＋10％綠光，R60B20G20/60％紅光＋20％藍光＋20％綠光）研究瞭光質條件對紫揹天葵次級代謝物（揮髮油和酚類）的影響。結果錶明：與R70B20G10光質相比，R60B20G20光質顯著增加瞭萜烯類物質（α，β-石竹烯）的積纍，降低瞭醛類成分（綠葉揮髮物）在香氣物質中的比例，而R60B30G10與此結果相反；與其它光質相比，R60B30G10光質增加瞭總花色苷和總黃酮的含量，而在R70B20G10和R60B2OG20光質條件下這些物質的含量沒有顯著差異；與其它光質相比，R70B20G10光質增加瞭β-鬍蘿蔔素積纍和植物葉片提取物的抗氧化活性（DPPH），而R60B20G20光質則顯著降低瞭β-鬍蘿蔔素的含量。因此，R70B20G10為適閤于紫揹天葵積纍更多有用次級代謝產物及提高其營養和藥用價值的光質條件。
위료탐색촉진자배천규재수공배경중경호지적루생물활성성분적유효광질조건，채용3충LED광원（ R60B30G10/60％홍광＋30％람광＋10％록광，R70B20G10/70％홍광＋20％람광＋10％록광，R60B20G20/60％홍광＋20％람광＋20％록광）연구료광질조건대자배천규차급대사물（휘발유화분류）적영향。결과표명：여R70B20G10광질상비，R60B20G20광질현저증가료첩희류물질（α，β-석죽희）적적루，강저료철류성분（록협휘발물）재향기물질중적비례，이R60B30G10여차결과상반；여기타광질상비，R60B30G10광질증가료총화색감화총황동적함량，이재R70B20G10화R60B2OG20광질조건하저사물질적함량몰유현저차이；여기타광질상비，R70B20G10광질증가료β-호라복소적루화식물협편제취물적항양화활성（DPPH），이R60B20G20광질칙현저강저료β-호라복소적함량。인차，R70B20G10위괄합우자배천규적루경다유용차급대사산물급제고기영양화약용개치적광질조건。
To explore the efficient illuminant for Gynura bicolor DC to produce more bioactive com-pounds under controlled environments , three LED illuminants of R60B30G10 ( 60%Red lights +30%Blue lights+10%Green lights), R70B20G10/(70%Red lights +20%Blue lights +10%Green lights) and R60B20G20( 60% Red lights +20% Blue lights +20% Green lights) were applied to investigate the effects of light quality on the accumulation of secondary metabolites ( es-sential oils and phenols ) .Results showed that R 60 B20 G20 light treatment significantly increased the accumulation of terpenes (α,β-caryophyllene ) and reduced the proportion of aldehydes ( green leaf volatiles) in total volatiles, but such trend conversed in R60B30G10 light group.The contents of total anthocyanins and flavonoids were promoted in R 60 B30 G10 light treatment as compared with other light groups, and there were no difference between R70B20G10 and R60B2OG20 light condi-tions.In comparison to other light conditions , R70B20G10 light group enhanced the accumulation ofβ-carotene and antioxidative capacity ( DPPH assay ) of leaf extract, whereas R60B20G20 light group evidently decreased the accumulation of β-carotene.Therefore, artificial LED lighting of R70B20G10 was a suitable condition for Gynura bicolor DC to produce more beneficial secondary metabolites and improve nutritional and medicinal value under controlled environment .
