Sun Zhiyu, Zhou Yongbin, Zhu Wenxu, Yin You
Life Science and Technology College, Dalian University, Dalian 116622, China.
College of Forestry, Shenyang Agricultural University, Shenyang 110866, China.
Foods. 2023 Sep 20;12(18):3495. doi: 10.3390/foods12183495.
As a traditional cash crop with ecological and nutritional values, mulberry is gradually expanding its consumption worldwide due to its great regional adaptability and superior health functions. The widespread interest in nutrients has led to a growing need to explore in depth the health benefits of mulberries. Many studies are actively being conducted to investigate the adaptability of the diversity of mulberries in different applications. This study systematically investigated the physicochemical properties and antioxidant activity of four mulberry genotypes cultivated in China's semi-arid sandy regions to better understand the composition and health-promoting potential of this super crop. Chemical composition identification was identified via HPLC and antioxidant activity was further determined via DPPH and FRAP. The moisture, crude protein, ash, soluble solids, phenolics, anthocyanins, and flavonoids contents of mulberry were comparatively analyzed. The study revealed that the four mulberry genotypes showed significant differences in quality and content of the analyzed characteristics. The greatest antioxidant activity was found in Shensang 1, which had the most soluble solids (17%) and the highest amounts of free sugar (fructose: 5.14% and glucose: 5.46%). Ji'an had the most minerals (K: 2.35 mg/g, Ca: 2.27 mg/g, and Fe: 467.32 mg/kg) and it also contained chlorogenic acid, which has the potential to be turned into a natural hypoglycemic agent. PCA and Pearson correlation analysis indicated that the antioxidant activity was closely related to the chemical contents of total phenols, flavonoids, anthocyanins, and soluble sugars. If the antioxidant activity and nutrient content of the developed plants are considered, Shen Sang 1 is the most favorable variety. This finding can be used to support the widespread cultivation of mulberries to prevent desertification as well as to promote the development of the mulberry industry.
作为一种具有生态和营养价值的传统经济作物，桑树因其强大的区域适应性和卓越的健康功能，在全球范围内的消费量正逐渐增加。人们对营养物质的广泛关注导致对深入探索桑树健康益处的需求日益增长。目前正在积极开展许多研究，以调查桑树多样性在不同应用中的适应性。本研究系统地调查了在中国半干旱沙区种植的四种桑树基因型的理化性质和抗氧化活性，以更好地了解这种超级作物的成分和促进健康的潜力。通过高效液相色谱法进行化学成分鉴定，并通过二苯基苦味酰基自由基（DPPH）和铁离子还原抗氧化能力（FRAP）进一步测定抗氧化活性。对桑树的水分、粗蛋白、灰分、可溶性固形物、酚类、花青素和黄酮类化合物含量进行了比较分析。研究表明，四种桑树基因型在所分析特征的质量和含量上存在显著差异。抗氧化活性最强的是陕桑1号，其可溶性固形物含量最高（17%），游离糖含量也最高（果糖：5.14%，葡萄糖：5.46%）。冀桑的矿物质含量最高（钾：2.35毫克/克，钙：2.27毫克/克，铁：467.32毫克/千克），并且还含有绿原酸，绿原酸有潜力成为一种天然降血糖剂。主成分分析（PCA）和皮尔逊相关性分析表明，抗氧化活性与总酚、黄酮类化合物、花青素和可溶性糖的化学含量密切相关。如果考虑所培育植物的抗氧化活性和营养成分，陕桑1号是最优良品种。这一发现可用于支持桑树的广泛种植，以防止沙漠化，并促进桑产业的发展。
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