Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, University Park campus, Nottingham, NG7 2RD, UK.
Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, University Park campus, Nottingham, NG7 2RD, UK; Department of Bioprocess Engineering, Faculty of Agricultural Technology, Universitas Brawijaya, Malang, 65145, Indonesia.
Food Chem. 2024 Dec 1;460(Pt 1):140549. doi: 10.1016/j.foodchem.2024.140549. Epub 2024 Jul 24.
This work investigated a sustainable and efficient approach of pectin extraction for banana peel waste valorisation and studied the influence of banana ripening stages (RS at 2,5 and 7). Although pectin content in banana peel raw material decreased during ripening, pectin extraction was favoured. The highest alcohol-insoluble solids (AIS) yield (12.5%) was achieved at 70 °C, 15 mins from RS 7 peel. All extracts were homogalacturan-rich with some rhamnogalacturonan-I content (showing HGA/RG-I ratio > 2) with varied degree of methylation (DM). The highest HGA content (837.2 mg/g AIS) and HGA/RG-I ratio (9.9) were achieved at 110 °C, 0 mins from RS 7, suggesting its promising application as gelling agent. The highest RG-I content (111.1 mg/g AIS) were obtained at 110 °C, 5 mins from RS 7, which was comparable with the pectin with reported prebiotic ability isolated from the literature, suggesting its potential application in novel products.
本工作研究了一种从香蕉皮废物中提取果胶的可持续、高效方法，并研究了香蕉成熟度（RS 2、5 和 7）的影响。虽然香蕉皮原料中的果胶含量在成熟过程中会下降，但果胶的提取却得到了促进。从 RS 7 的果皮中，在 70°C 下提取 15 分钟，可获得最高的醇不溶固体（AIS）收率（12.5%）。所有提取物均富含半乳糖醛酸聚糖，具有一定的鼠李半乳糖醛酸聚糖 I 含量（表现出 HGA/RG-I 比>2），且甲基化程度不同。在 RS 7 下，110°C 下提取 0 分钟，可获得最高的 HGA 含量（837.2 mg/g AIS）和 HGA/RG-I 比（9.9），表明其作为胶凝剂具有广阔的应用前景。在 RS 7 下，110°C 下提取 5 分钟，可获得最高的 RG-I 含量（111.1 mg/g AIS），与文献中报道的具有益生元能力的果胶相当，表明其在新型产品中的潜在应用。
