印楝种子废弃物中的生物除草剂——印楝油的开发、高效提取及对西洋参的化感作用

IF 4.6 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
Recycling Pub Date : 2023-05-24 DOI:10.3390/recycling8030050
Larissa Macelle De Paulo Barbosa, Jorge Oliveira Santos, Rayssa Carolinne Mouzinho de Sousa, Jomar Livramento Barros Furtado, P. Vidinha, Marco Aurélio Suller Garcia, Hector Aguilar Vitorino, Daiane Fossatti Dall’Oglio
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引用次数: 0

摘要

生物除草剂是使用农用化学品将对环境造成的损害降至最低的替代品。本研究的目的是从印楝成熟的废弃果实中提取印楝油,并使用不同极性的溶剂(或溶剂混合物)优化工艺。然后,通过固液萃取系统(Soxhlet),使用溶剂己烷、甲醇/己烷(1:1)、乙醇和己烷/乙醇(1:1)来确定产率最高、效率最高的工艺。测定了提取油的物理化学参数(密度、酸值、碘值、皂化值、酯值和分子量)和游离脂肪酸的百分比。此外,还评价了油(0%、2%、3%和4%m/v)对败毒杂草西洋参种子的化感作用,分析了其生长发育参数(发芽率、发芽速度、下胚轴和胚根长度)。己烷在印楝油提取中的效率最高(4h),产率最高(43%)。它还提供了更好的油酸和亚油酸含量(41.3%和18.6%),类似于乙醇提取(41.1%和20.22%)。此外,用己烷和己烷/乙醇提取的油的化感特性更突出。这种优化的工艺提供了一种有效的替代方案,以获得战略性控制有害植物的天然除草潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Bioherbicide from Azadirachta indica Seed Waste: Exploitation, Efficient Extraction of Neem Oil and Allelopathic Effect on Senna occidentalis
Bioherbicides are an alternative to minimize the damage caused to the environment using agrochemicals. This study had the objective of extracting neem oil from ripe waste fruits that Azadirachta indica A. Juss and optimizing the process using solvents (or a mixture of solvents) with different polarities. Then, through a solid-liquid extraction system (Soxhlet), the solvents hexane, methanol/hexane (1:1), ethanol, and hexane/ethanol (1:1) were used to determine the process with the highest yield and most efficiency. The physicochemical parameters of the extracted oil (density, acidity value, iodine value, saponification value, esters value, and molecular weight) and the % of free fatty acids were determined. In addition, the allelopathic properties of the oil (0%, 2%, 3%, and 4% m/v) on septic weed Senna occidentalis seeds were evaluated, analyzing their growth and development parameters (germination, germination speed, hypocotyl, and radicle length). Hexane was the most efficient (4 h) in neem oil extraction, with the highest yield (43%). It also provided a better oleic and linoleic acid content (41.3% and 18.6%), similar to ethanol extraction (41.1% and 20.22%). Moreover, the allelopathic properties were more prominent for the oils extracted with hexane and hexane/ethanol. This optimized process provides an efficient alternative to obtain a natural herbicidal potential for strategically controlling harmful plants.
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来源期刊
Recycling
Recycling Environmental Science-Management, Monitoring, Policy and Law
CiteScore
6.80
自引率
7.00%
发文量
84
审稿时长
11 weeks
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