Lignin based microcarriers achieve controlled release of fungicides, providing new ideas for agricultural coating materials

Research Overview: According to the study published in Industrial Crops and Products, Volume 253, Part 1, November 2026, authors Jose Huerta Recasens, Julieta Cantarella Otero, Francisco F. P é rez Pla, Calina Borgwan, Jos é Miguel Guzm á n, Amparo Ch á fer, Clara M. G ó mez, Mario Culebras, and Rafael Mu ñ oz Esp í reported a lignin based microcarrier for controlled release of fungicides. This study belongs to the direction of controlled release and coating materials in the field of agricultural materials, focusing on the regulation of carrier materials on the release behavior of active ingredients.

Materials and Design Points

Research on the construction basis of lignin as a microcarrier.

. Lignin is a natural aromatic polymer with a wide range of sources, and has material science significance in the context of biobased and biodegradable agricultural polymers. Loading fungicides onto microcarriers aims to achieve controlled release rather than one-time release. The original text did not provide release curves, encapsulation rates, or field effect data at the abstract level, so this article does not make specific numerical inferences about them.

Significance for the polymer additive industry

From the perspective of agricultural material applications, the design logic of controlled-release and coating materials is similar to that of agricultural film systems: both require the carrier or matrix to maintain structural stability in outdoor environments, while releasing or blocking active components as needed.

. Agricultural film and greenhouse film are exposed to ultraviolet light and oxygen environment for a long time, and light stabilizers, antioxidants, and HALS (hindered amine light stabilizers) are usually added to the formula to delay aging; Weathering masterbatch disperses these additives in the form of masterbatch in advance, making it easier to introduce them evenly during processing. If lignin based microcarriers are to be put into practical use, their stability under photo oxygen conditions, compatibility with additive systems, and dispersion behavior during processing will all be evaluated in formulation design. In addition, this study suggests the feasibility of natural polymers in agricultural controlled release carriers. For polymer additive companies, this means that the interface issues between coating materials and bio based agricultural polymers are worth paying attention to: the compatibility between the carrier and matrix resin, the mutual influence between the release rate of active ingredients and the migration of additives may all affect the weather resistance and release stability of the final product. The original text does not involve the specific use of light stabilizers, antioxidants, or HALS. The above association is based on industry interpretation of the application field of the column and does not constitute an extension of the research conclusion.

Information to be observed

The information currently available for this study is limited to the research topic, author, and journal issue.

. The preparation process of microcarriers, loading method of fungicides, release kinetics data, degradation behavior, and actual agricultural scenario verification still need to be further confirmed by reviewing the full text. For the agricultural materials industry, it is worth paying attention to the stability performance of the system under real outdoor conditions, as well as its possibility of integration with existing agricultural film, weather resistant masterbatch, and coating material processes.

Information source:Lignin-based microcarriers for controlled fungicide release， Organized by Herun Chemical.