马黛茶形态型的生物活性化合物和叶片解剖

IF 0.7 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY
M. M. Duarte, Mônica Moreno Gabira, J. Tomasi, E. Amano, A. C. Nogueira, I. Wendling
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引用次数: 3

摘要

摘要本研究旨在研究巴拉圭冬青(yerba matate, Ilex paraguariensis)形态型的生物活性成分和叶面解剖结构。从“黄樟”、墨绿色、暗绿色、灰色和“佩鲁迪纳”叶的水提物中测定了马黛茶的抗氧化能力、总酚类化合物、甲基黄嘌呤和咖啡酰奎宁酸。采用光镜和扫描电镜观察解剖分化。深绿色形态的咖啡因含量最高(20.4 mg g-1),仅与“peludinha”形态(8.8 mg g-1)有显著差异。所有形态均表现出相似且较高的抗氧化活性(ABTS和DPPH的抗氧化活性分别为886.0 μmol / g和588.1 μmol / g Trolox当量)和高的总酚类化合物含量(73.9 mg / g没食子酸当量)。虽然叶肉的解剖结构相似,但叶肉近表面的蜡沉积和角质层条纹结构在这五种形态之间存在差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Bioactive compounds and leaf anatomy of yerba mate morphotypes
Abstract The objective of this work was to evaluate the bioactive compounds and foliar anatomy of yerba mate (Ilex paraguariensis) morphotypes. The antioxidant capacity, total phenolic compounds, methylxanthines, and caffeoylquinic acids were determined from the aqueous extract of leaves of the following yerba mate morphotypes: “sassafras”, dark green, dull green, gray, and “peludinha”. Light microscopy and scanning electron microscopy were used to observe the anatomical differentiations. The dark-green morphotype showed the highest contents of caffeine (20.4 mg g-1), differing significantly only from the “peludinha” morphotype (8.8 mg g-1). All morphotypes showed similar and high antioxidant activity (886.0 and 588.1 μmol Trolox equivalent antioxidant activity per gram of sample for ABTS and DPPH, respectively), as well as high total phenolic compounds content (73.9 mg gallic acid equivalent per gram of sample). Although the anatomy of the leaf mesophyll is similar, the wax deposition and cuticle striation configuration on the adaxial surface differ between all five morphotypes.
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来源期刊
Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuaria Brasileira 农林科学-农业综合
CiteScore
1.20
自引率
0.00%
发文量
45
审稿时长
9-18 weeks
期刊介绍: Pesquisa Agropecuária Brasileira – PAB – is issued monthly by Empresa Brasileira de Pesquisa Agropecuária – EMBRAPA, affiliated to Ministry of Agriculture, Livestock and Food Supply. PAB publishes original scientific-technological articles on Plant Physiology, Plant Pathology, Crop Science, Genetics, Soil Science, Food Technology and Animal Science. Its abbreviated title is Pesq. agropec. bras., and it should be used in bibliographies, footnotes, references and bibliographic strips.
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