英语翻译Phenolic compounds are important components in vegetable

英语翻译
Phenolic compounds are important components in vegetable foods,infusions and teas for their beneficial effects on human health.The
presence of such compounds,evidenced for the first time in Carica papaya leaves,could partially explain the pharmacological properties
of this plant and demonstrates its importance in alimentation and daily intake.C.papaya leaves were extracted with methanol in a
Soxhlet apparatus and later with a liquid–liquid extraction (LLE) with the aim of identifying and quantifying secondary metabolites
from this plant,using gas chromatography–mass spectrometry (GC–MS) in the selected ion-monitoring (SIM) mode.Derivatization
procedure of the extract was necessary to analyze the polar compounds in GC–MS.5,7-Dimethoxycoumarin and polar molecules such as
protocatechuic acid,p-coumaric acid,caffeic acid,chlorogenic acid,kaempferol and quercetin were detected and identified in qualitative
analysis.The quantitative analysis has shown the presence of phenolic acids as the main compound,while chlorogenic acid was found in
trace amounts,compared to the flavonoids and coumarin compounds.The quantities detected were 0.25 mg/g (dry leaf) for caffeic acid,
0.33 mg/g for p-coumaric acid and 0.11 mg/g for protocatechuic acid.Kaempferol and quercetin were 0.03 and 0.04 mg/g,respectively,
while that for 5,7-dimethoxycoumarin was 0.14 mg/g.

酚类化合物是重要组分在菜食物、注入和茶为他们的有利作用对人类健康.出现的这样化合物,第一次见证在Carica番木瓜在营养和每日进水闸离开,可能部份地解释这棵植物药物学物产并且展示它的重要性.C.番木瓜叶子在索格利特用具提取了与甲醇和以后与液体液体提取(LLE)打算辨认和定量次要代谢产物从这棵植物,使用气体色谱法与质谱分析(GC-MS)在选择的离子监视(SIM)方式下.萃取物的衍生作用做法是必要分析极性化合物在GC-MS.5,7-Dimethoxycoumarin和极性分子例如protocatechuic酸、p-coumaric酸、咖啡的酸、绿原酸酸、山奈醇和五羟黄酮在定性分析被查出了并且被辨认了.而绿原酸酸在痕量被发现了,与黄酮类化合物和香豆素化合物比较,定量分析显示了酚醛酸出现作为主要化合物.检测的数量是0.25 mg/g (干燥叶子)为咖啡的酸,0.33 mg/g为p-coumaric酸和0.11 mg/g为protocatechuic酸.而那为5,7-dimethoxycoumarin是0.14 mg/g,山奈醇和五羟黄酮分别为0.03和0.04 mg/g.