Biodegradation of a Nanocellulose Superabsorbent and Its Effect on the Growth of Spinach (Spinacea oleracea)
Biodegradation of a Nanocellulose Superabsorbent and Its Effect on the Growth of Spinach (Spinacea oleracea)
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DOI：
10.1021/acsagscitech.1c00178
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发表时间：
2022-02-21
期刊：
影响因子：
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通讯作者：
Garnier, Gil
中科院分区：
文献类型：
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作者：
Barajas-Ledesma, Ruth M.;Stocker, Craig W.;Garnier, Gil
在这项研究中，菠菜（菠菜）植物生长在两种土壤中，粘壤土（CL）和桑迪（SD）土壤，修改与两种类型的高吸水性聚合物（SAP），纳米纤维素和商业，在不同水平的土壤水分：70%，40%和20%。测定了超吸收剂对土壤性质、水分管理和植物生物量的影响，并与用商业阴离子聚丙烯酰胺基SAP处理的土壤进行了比较。植物生物量是最高的SD土壤修正与商业超吸收剂。然而，它减少CL土壤时，施加超吸收剂，独立的SAP类型。当使用纳米纤维素SAP时，这种效果被放大;这可能是由于这种超吸收剂的浸水应力和快速生物降解，其中在暴露5天后保留约50%的初始质量。使用纳米纤维素SAP作为保水剂为全球农业提供了急需的可持续解决方案。未来的研究需要修改纳米纤维素SAP的结构，以抑制其生物降解，并增加其农业用途的好处。
In this study, spinach (Spinacea oleracea) plants were grown in two soils, a clay loam (CL) and a sandy (SD) soil, amended with two types of superabsorbent polymers (SAPs), nanocellulose and commercial, at different levels of soil moisture: 70, 40, and 20%. The effect of the superabsorbent on the soil properties, water management, and plant biomass was measured and compared to that in soils treated with a commercial anionic polyacrylamide-based SAP. Plant biomass is the highest in SD soil amended with a commercial superabsorbent. However, it decreases in the CL soil when a superabsorbent is applied, independent of the SAP type. This effect is magnified when a nanocellulose SAP is used; this is likely attributed to waterlogging stress and the fast biodegradation of this superabsorbent, where approximately 50% of the initial mass remains after 5 days of exposure. The use of a nanocellulose SAP as a water retention agent offers the potential for a much-needed sustainable solution for global agriculture. Future studies are needed to modify the structure of the nanocellulose SAP to inhibit its biodegradation and increase its benefits for agricultural use.