从秸秆中提取的增值生物产品作为农药输送的载体：农业废弃物的创新再利用

IF 6.2 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Industrial Crops and Products Pub Date : 2025-01-01 DOI:10.1016/j.indcrop.2024.120294

Huanling Wu , Chunxia Wang , Haiyan Mao , Yangbing Wen , Chenghui Zheng , Wei Zhang , Shizhao Yi

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引用次数: 0

摘要

秸秆是制备具有一维结构的纤维素纳米晶体（CNC）的重要生物质资源。以大麻秸秆（HS）、麦秆（WS）和麦壳（WH）为原料，研究其作为农药载体的潜在应用价值。WH-CNC表现出优异的性能，平均粒径小于100 nm，结晶度达65.9% %，Zeta电位值为-50.67 mV，硅烷改性CNC （Si-CNC）接枝率为28.40 %。其固有的特性使其非常适合用作农药输送系统（PDS）中的分散剂。为此，采用静电纺丝技术，以阿维菌素（AVM）为模型农药，以CNC和Si-CNC为分散剂，构建了新型PDS。CNC和Si-CNC的使用促进了PDS的分散，从而在控制释放和提高结构稳定性方面发挥了重要作用。制备的PDS具有直径为2 ~ 3 μm的亚球形结构，形成了稳定的胶态悬浮体系，表现出明显的Tyndall效应。此外，AVM的包封效率和光稳定性均有显著提高。这些性能的提高可归因于不同载体材料之间的协同相互作用。

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Value-added bio-products extracted from straw utilized as carriers for pesticide delivery: Innovative repurposing of agricultural waste

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Value-added bio-products extracted from straw utilized as carriers for pesticide delivery: Innovative repurposing of agricultural waste

Straw serves as a significant biomass resource for the fabrication of cellulose nanocrystals (CNC) with a one-dimensional structure. The extraction of CNC from hemp stalks (HS), wheat straws (WS), and wheat husks (WH) was conducted to investigate their potential application as carriers for pesticide delivery. WH-CNC exhibited superior properties with the average particle length below 100 nm, the crystallinity up to 65.9 %, a Zeta potential value of –50.67 mV, and a silane-modified CNC (Si-CNC) grafting rate of 28.40 %. The inherent properties make it highly suitable for utilization as a dispersant in pesticide delivery systems (PDS). Consequently, an innovative PDS was constructed using electrospinning technology with avermectin (AVM) as the model pesticide, and incorporating CNC and Si-CNC as dispersants. The utilization of CNC and Si-CNC facilitated the dispersion of the PDS, thereby playing a significant role in controlling release and enhancing structural stability. The fabricated PDS exhibited a subspherically structured morphology with diameters ranging from 2 to 3 μm, enabling the formation of a stable colloidal suspension system that demonstrated obvious Tyndall effect. Moreover, both encapsulation efficiency and photostability of AVM were significantly enhanced. These improvements in performance can be attributed to the synergistic interaction between the different carrier materials.

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来源期刊

Industrial Crops and Products 农林科学-农业工程

CiteScore

9.50

自引率

8.50%

发文量

1518

审稿时长

43 days

期刊介绍： Industrial Crops and Products is an International Journal publishing academic and industrial research on industrial (defined as non-food/non-feed) crops and products. Papers concern both crop-oriented and bio-based materials from crops-oriented research, and should be of interest to an international audience, hypothesis driven, and where comparisons are made statistics performed.