Department Life and Consumer Sciences, College of Agriculture and Environmental Sciences, University of South Africa, Private Bag X6, Florida 1710, South Africa.
Phytomedicine Programme, Department of Paraclinical Sciences, University of Pretoria, Private Bag X04, Onderstepoort, 0110 Pretoria, South Africa.
Food Chem. 2018 Aug 15;257:90-100. doi: 10.1016/j.foodchem.2018.02.121. Epub 2018 Mar 1.
Increased preference to herbal drinks has led to global interest in the use and production of different plant species for the preparation of various drink formulations. Medicinal properties derived from bioactive compounds remain the main driver of choice for herbal teas. This study determined the chemical variation in honeybush, rooibos, special and bush tea, profiled compounds responsible for such differences and compared their peak areas. Nuclear magnetic resonance and high resolution liquid chromatography-mass spectrometry were used to determine compound variation and profiling. Principal component analysis and partial-least square multivariate statistical analysis showed distinct differences (P < 0.05) between the different types of herbal teas. Detected compounds included flavonoids, phenolics, lignans, megastigmane glycoside, most of which possess health benefits. The findings showed that South African herbal teas could play a vital role as health promoting drinks, and that bush tea and special tea are phytochemically comparable with other commercialized herbal teas.
饮用草药的偏好增加，导致人们对不同植物物种的使用和生产产生了全球性的兴趣，以用于制备各种饮料配方。生物活性化合物带来的药用特性仍然是选择草药茶的主要驱动因素。本研究测定了霍桑、路易波士茶、特种茶和灌木茶的化学变化，分析了导致这种差异的化合物，并比较了它们的峰面积。采用核磁共振和高分辨液相色谱-质谱联用技术来测定化合物的变化和分析。主成分分析和偏最小二乘多元统计分析表明，不同类型的草药茶之间存在明显差异（P<0.05）。检测到的化合物包括类黄酮、酚类、木脂素、megastigmane 糖苷等，其中大部分都具有健康益处。研究结果表明，南非草药茶可以作为促进健康的饮品发挥重要作用，灌木茶和特种茶在植物化学方面与其他商业化的草药茶相当。
