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<p>This study focused on <i>Zophobas atratus</i> larvae (<i>Zal)</i>, exploring the impact of diets containing cassava peel, soybean meal and wine lees on larval growth performance, antioxidant status, nutritional and phenolic composition over a 90-day rearing period. Proximate composition (AOAC procedures), fatty acid and phenolic profiles (chromatographic techniques), antioxidant capacity assays (spectrophotometric approaches), mass gain and feed conversion efficiency were assessed. The dietary inclusion of wine lees reduced larval growth rate by 9% but improved feed conversion efficiency, while exerting negligible effects on mortality rate, proximate composition and fatty acid profile. Catechin and quercetin-3-O-β-D-glucoside were identified as the predominant phenolics in <i>Zal</i>. Furthermore, wine lees increased quercetin-3-O-β-D-glucoside levels while also inducing the larval bioaccumulation of procyanidin B1. The ability of DPPH, FRAP, ABTS, and Folin-Ciocalteu assays to detect changes in antioxidant capacity due to <i>these phenolic</i> modifications was evaluated. Additionally, Principal Component Analysis (PCA) was conducted to explore potential correlations between the phenolic profile and the antioxidant capacity of larval extracts.</p>

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Effects of a wine lees-based diet on the growth, antioxidant status, nutritional and phenolic composition of Zophobas atratus larvae

  • 期刊论文

  • 发表日期：

    2026年1月22日

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  • Thomas Vieira Machado Bacelar,
  • Carolina Oliveira de Souza,
  • Kodjovi Ayena,
  • Caroline Pereira Mourão Moraes,
  • Renata Quartieri Nascimento,
  • Aline Camarão Telles Biasoto,
  • Marcelo Andres Umsza-Guez

摘要

This study focused on Zophobas atratus larvae (Zal), exploring the impact of diets containing cassava peel, soybean meal and wine lees on larval growth performance, antioxidant status, nutritional and phenolic composition over a 90-day rearing period. Proximate composition (AOAC procedures), fatty acid and phenolic profiles (chromatographic techniques), antioxidant capacity assays (spectrophotometric approaches), mass gain and feed conversion efficiency were assessed. The dietary inclusion of wine lees reduced larval growth rate by 9% but improved feed conversion efficiency, while exerting negligible effects on mortality rate, proximate composition and fatty acid profile. Catechin and quercetin-3-O-β-D-glucoside were identified as the predominant phenolics in Zal. Furthermore, wine lees increased quercetin-3-O-β-D-glucoside levels while also inducing the larval bioaccumulation of procyanidin B1. The ability of DPPH, FRAP, ABTS, and Folin-Ciocalteu assays to detect changes in antioxidant capacity due to these phenolic modifications was evaluated. Additionally, Principal Component Analysis (PCA) was conducted to explore potential correlations between the phenolic profile and the antioxidant capacity of larval extracts.