First Insight into Lignin Valorization as a Promising Biopolymer for the Modulation of the Physicochemical Properties of Port Wine,Journal of Agricultural and Food Chemistry

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First Insight into Lignin Valorization as a Promising Biopolymer for the Modulation of the Physicochemical Properties of Port Wine
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2024-09-17 , DOI: 10.1021/acs.jafc.4c05442
Ana Rita Pereira ₁ , Elsa Brandão ₁ , Joana Pinto _{2,

3} , Paula Guedes de Pinho _{2,

3} , Carina A. E. Costa _{4,

5} , Alírio E. Rodrigues _{4,

5} , Michele Michelin _{6,

7} , Susana Soares ₁ , Victor de Freitas ₁ , Nuno Mateus ₁ , Joana Oliveira ₁

Affiliation

Lignosulfonate (LS), kraft lignin (KL), and organosolv lignin (OL) were evaluated as potential modulating agents of the physicochemical properties of Port wine at two different concentrations for 7 and 30 days. KL and LS demonstrated the ability to remove proteins and potentiate the anthocyanin concentration. LS reduced the tannin content and the interaction of salivary acidic proline-rich proteins with wine phenolic compounds. None of the lignin promoted a perceptible color change; however, the yellowish color of KL and OL at 100 g/hL contributed to an increase in the yellow tones of wines. Lignin improved wine aroma by reducing the amount of unwanted volatiles by 30% and increasing the content of ethyl esters associated with fruity aromas by up to 60%. The results suggest that lignin, especially LS, can be employed as a modulating agent, positively impacting wine’s physicochemical properties. This valorization of a byproduct opens up new opportunities for the wine industry.

中文翻译：

首次深入了解木质素作为一种有前景的生物聚合物来调节波特酒的理化特性

木质素磺酸盐 (LS)、牛皮纸木质素 (KL) 和有机溶剂木质素 (OL) 在两种不同浓度下作为波特酒理化性质的潜在调节剂，分别进行了 7 和 30 天的评估。 KL 和 LS 表现出去除蛋白质和增强花青素浓度的能力。 LS 降低了单宁含量以及唾液中富含脯氨酸的酸性蛋白质与葡萄酒酚类化合物的相互作用。没有一种木质素促进可察觉的颜色变化；然而，100 g/hL 的 KL 和 OL 呈黄色，导致葡萄酒的黄色调增加。木质素可将不需要的挥发物含量减少 30%，并将与果香相关的乙酯含量增加多达 60%，从而改善葡萄酒香气。结果表明，木质素，尤其是 LS，可以用作调节剂，对葡萄酒的理化特性产生积极影响。这种副产品的增值为葡萄酒行业开辟了新的机遇。

更新日期：2024-09-17

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