Publications by authors named "Hasitha Warusawitharana"

Organic acids account for around 3% of the dry matter in tea leaves, and their composition and contents vary in different types of tea. They participate in the metabolism of tea plants, regulate nutrient absorption and growth, and contribute to the aroma and taste quality of tea. Compared with other secondary metabolites in tea, the researches on organic acids are still limited.

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Theaflavin-3,3'-digallate (TF3) is a representative theaflavin of black tea and is remarkable for the anti-coronary heart disease effect. As an adaptive response to heart failure, pathological cardiac hypertrophy (PCH) has attracted great interest. In this study, the PCH cell model was established with H9c2 cells by angiotensin II, and the prevention effect and mechanisms of TF3 were investigated.

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Triterpene saponins exhibit various biological and pharmacological activities. However, the knowledge on saponin biosynthesis in tea plants ( L.) is still limited.

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Obesity is a worldwide epidemic and increases the risk of metabolic syndrome through chronic inflammation. Tea polyphenols (TP), the major functional component of tea, has shown preventive effects on obesity and obesity-related disease, but the underlying mechanism is complicated and remains obscure. The present study was aimed to elucidate the anti-inflammation effect of TP in high-fat-diet (HFD)-induced obese mice.

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5-Aminolevulinic acid (ALA) is an important plant growth regulator which is derived from 5-carbon aliphatic amino acid. The present study investigates the interaction of increasing NaCl-salinity and ALA on plant growth, leaf pigment composition, leaf and root Na(+)/K(+) ratio and chloroplast ultrastructure in mesophyll cells of oilseed rape (Brassica napus) leaves. The plants were treated hydroponically with three different salinity levels (0, 100, 200 mM) and foliar application of ALA (30 mg l(-1)) simultaneously.

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