Selvaraj Vijai Selvaraj Karungan, Periakaruppan Rajiv, Palanimuthu Vanathi, Romanovski Valentin, Bharathi Ayyarappan, Mohan Manu
Vegetable Research Station, Tamil Nadu Agricultural University, Palur, 607102, Cuddalore, India.
Department of Biotechnology, PSG College of Arts & Science, Coimbatore, 641014, Tamil Nadu, India.
ChemistryOpen. 2025 Jun;14(6):e202400386. doi: 10.1002/open.202400386. Epub 2025 Jan 28.
The alga contains salt and heavy metals that are accumulated in algae poses a significant challenge to the safe use of algae in soil fertilization and other applications. This study examines the relevance of algal biomass as an environmentally friendly fertilizer, thereby contributing to sustainable coastal management practices. In this study, the hot and cold extraction method were done to obtain the Ulva rigida extract. Heavy metals such as vanadium, chromium, manganese, iron, nickel, cobalt, copper, zinc and cadmium etc. were analyzed using ICP-MS. Heavy metal analysis showed that the major metals such as manganese, iron, vanadium and zinc in Ulva rigida extract. The algae extract was used in different concentration (20, 40, 60 and 80 μL) to analyze the seed germination study in Pennisetum glaucum and it was found that theseed germination were 100 % at 5 day after sowing and the root and shoot length increased with increasing concentration of Ulva rigida extract and at 80 μL the shoot length of Pennisetum glaucum were decreased. The aqueous extracts of Ulva rigida are eco-friendly, safe method for recycling the algal biomass as a novel biofertilizer.
藻类中含有的盐分和重金属会在藻类中积累，这对藻类在土壤施肥及其他应用中的安全使用构成了重大挑战。本研究探讨了藻类生物质作为一种环境友好型肥料的相关性，从而为可持续的海岸管理实践做出贡献。在本研究中，采用热萃取法和冷萃取法来获取石莼提取物。使用电感耦合等离子体质谱仪（ICP-MS）分析了钒、铬、锰、铁、镍、钴、铜、锌和镉等重金属。重金属分析表明，石莼提取物中的主要金属为锰、铁、钒和锌。将藻类提取物以不同浓度（20、40、60和80微升）用于分析珍珠粟的种子萌发研究，结果发现播种后5天时种子发芽率为100%，并且随着石莼提取物浓度的增加，根和芽的长度增加，而在80微升时珍珠粟的芽长有所下降。石莼的水提取物是一种生态友好、安全的方法，可将藻类生物质作为新型生物肥料进行回收利用。
