Hahn Agata, Liszka Justyna, Maksym Julia, Nemś Agnieszka, Miedzianka Joanna
Department of Biotechnology and Food Microbiology, Wroclaw University of Environmental and Life Sciences, 37 Chelmonskiego Street, 51-630 Wroclaw, Poland.
Department of Food Storage and Technology, Wroclaw University of Environmental and Life Sciences, 37 Chelmonskiego Street, 51-630 Wroclaw, Poland.
Molecules. 2025 Jan 5;30(1):181. doi: 10.3390/molecules30010181.
The growing interest in a plant-based diet leads to the search for new sources of protein in the human diet as an alternative to animal proteins. Plant materials that can supplement protein as additives in food products are being studied. Watermelon seeds ( L.) are rich in proteins and waste from the food industry; however, their extraction is not completely cost-free, and the flour production process may involve additional costs related to their extraction and processing. The studies showed that watermelon seed protein concentrate, obtained using the alkaline extraction method, contained 82.52 g/100 g of protein and 1.51 g/100 g of fat. The polyphenol content in the protein preparation from defatted watermelon seeds was 1.9 mg gallic acid/g, and the antioxidant activity of the concentrate was 29.26 µmol Trolox/g (by the ABTS+). The obtained watermelon seed protein concentrate was characterised by solubility of more than 80% (at pH = 10), water absorption at the level of 2.46 (g water/g) and oil absorption equal to 2.1 (ml oil/g), showed poor foaming properties (1.51%), and was characterised by low emulsification.
人们对植物性饮食的兴趣日益浓厚，促使人们在人类饮食中寻找新的蛋白质来源，以替代动物蛋白。正在研究可作为食品添加剂补充蛋白质的植物材料。西瓜籽富含蛋白质，且是食品工业的废弃物；然而，提取西瓜籽并非完全免费，面粉生产过程可能涉及与提取和加工相关的额外成本。研究表明，采用碱性提取法获得的西瓜籽浓缩蛋白含有82.52克/100克蛋白质和1.51克/100克脂肪。脱脂西瓜籽蛋白制品中的多酚含量为1.9毫克没食子酸/克，浓缩物的抗氧化活性为29.26微摩尔Trolox/克（通过ABTS+法测定）。所获得的西瓜籽浓缩蛋白的特点是溶解度超过80%（在pH = 10时），吸水率为2.46（克水/克），吸油率为2.1（毫升油/克），发泡性能较差（1.51%），乳化性能较低。
