Unveiling the nutritional and bioactive potential of bamboo (Bambusa tulda Roxb.) tea: A phytochemical and spectroscopic study

Advances in Bamboo Science Pub Date : 2025-02-01 DOI:10.1016/j.bamboo.2025.100132

Rosy Narzary , Riu Riu Wary , Jangila Basumatary , Pranjal Kalita , Sushil Kumar Middha , Talambedu Usha , Arvind Kumar Goyal

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Abstract

This study investigated the physicochemical properties and antioxidant activity of Bambusa tulda tea. The tea exhibited low moisture and ash content, indicative of good drying quality. Its acidic pH was attributed to the presence of organic acids. Phytochemical analysis confirmed the presence of carbohydrates, reducing sugars, triterpenoids and cardiac glycosides. The dry extract contained higher levels of phenolics and flavonoids compared to the infusion, resulting in stronger antioxidant activity, as demonstrated by a lower IC₅₀ value of 3.794 in the DPPH radical scavenging assay. Furthermore, silica (SiO₂) was extracted from the tea leaves and characterized using X-ray diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR). These analyses revealed an amorphous structure and spherical morphology. Field Emission Scanning Electron Microscopy (FE-SEM) and Energy Dispersive Spectroscopy (EDS) analyses corroborated the spherical morphology and elemental composition of the SiO₂. The extracted SiO₂ effectively degraded methylene blue and Congo red dyes under sunlight, highlighting the potential of B. tulda tea as a sustainable source of SiO₂ for environmental remediation.

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揭示竹茶的营养和生物活性潜力：一项植物化学和光谱研究

研究了竹茶的理化性质和抗氧化活性。茶叶水分和灰分含量低，干燥品质好。它的酸性pH值归因于有机酸的存在。植物化学分析证实了碳水化合物、还原糖、三萜和心脏苷的存在。干提取物的酚类物质和黄酮类物质含量高于浸渍提取物，抗氧化活性更强，DPPH自由基清除实验的IC50值为3.794。此外，从茶叶中提取二氧化硅（SiO₂），并利用x射线衍射（XRD）和傅里叶变换红外光谱（FTIR）对其进行了表征。这些分析揭示了非晶结构和球形形貌。场发射扫描电镜（FE-SEM）和能谱分析（EDS）证实了sio2的球形形貌和元素组成。提取的SiO₂在阳光下能有效降解亚甲基蓝和刚果红染料，突出了白茶树作为可持续环境修复SiO₂来源的潜力。

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来源期刊

Advances in Bamboo Science

CiteScore

0.90

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0.00%

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