Nanofibers from soybean hull insoluble polysaccharides as Pickering stabilizers in oil‐in‐water emulsions formulated under acidic conditions

Abstract

BACKGROUNDPickering emulsions are a kind of emulsion stabilized by solid particles. These particles generate a physical or mechanical barrier that provides long‐term stability to emulsion. Cellulose nanofibers are effective Pickering emulsifiers given its long length, high flexibility and entanglement capability. In this work, soybean hull insoluble polysaccharides (HIPS) were used as source of cellulose nanofibers by using a combination of chemical and mechanical treatment. The chemical composition, morphology, flow behavior, water holding capacity (WHC) and emulsifying properties of nanofibers were studied.RESULTSNanofibers with diameters between 35‐110 nm were obtained. The WHC increased significantly after the mechanical treatment, and the rheological behavior of the nanofibers was typical of cellulosic materials. Nanofibers were effective emulsifiers in O/W emulsions formulated under acidic conditions, without the need of using any additional surfactant. Emulsions were not affected by changes in the pH of the medium (3.00‐5.00), and were stable to coalescence.CONCLUSIONIt is possible that cellulose nanofibers form entangled network which acts as a mechanical steric barrier, providing stability to coalescence. These results are important for the development of effective O/W Pickering emulsifiers/stabilizers, with large applications in the food industry.This article is protected by copyright. All rights reserved.

Progress of plant‐derived non‐starch polysaccharides and their challenges and applications in future foods

“…Besides, it needs to be emphasized that algae are lower plants without obvious morphological differentiation, but they are also good resources of PNPs (Nurkolis et al., 2023). Given the sustainable development of future foods, it is a new strategy to get PNPs from agricultural wastes including vegetables (Yang et al., 2023), fruits (Li et al., 2023), oilseeds (Reta Dominguez et al., 2023), and so forth, greatly improving the value of agricultural products and alleviating environmental pollution.…”