To evaluate the nutritional quality characteristics of American red-kernel walnut and its oil,in this paper,traditional cultivated variety"Xiluo 3"was taken as control to determinate the composition and content of the main nutritional components,amino acids and mineral elements of the two kinds of walnuts.At the same time,the composition and content of fatty acids,VE,phytosterols,polyphenol content and oil quality index of walnut oil were also determined.The results indicated that the crude fat(50.40±0.72)％and crude protein content(19.60±0.56)％of red kernel walnut were significantly higher than those of Silo walnut(P＜0.05),the content of glutamic acid,arginine and Aspartic acid in the former were also significantly higher than those in the latter,being(166.24±0.26),(94.10±2.91)mg/g and(86.26±1.94)mg/g,respectively,the mineral element content of the two wal-nuts was similar;the content of total phenols[(727.08±0.24)mg/g],total flavonoids[(57.67±0.02)mg/g]and anthocyanins[(1.21±0.55)m g/g]in the inner seed coat of red kernel walnut were significantly higher than those in the seed coat of Xiluo walnut(P＜0.05);the content of linoleic acid(67.78±0.01)％in red kernel wal-nut oil was significantly higher than that in Xiluo walnut oil,and the content of polyunsaturated fatty acid[(76.74±0.20)％]in the former was also significantly higher than that in the latter(P＜0.05),however,the content of total VE[(169.88±0.12)mg/kg],total phytosterol[(2 095.06±2.26)mg/kg]and polyphenol[(30.93±0.01)m g/g]in the former were slightly lower than that in Xiluo walnut oil.The saponification value(171.78 mg KOH/g),peroxide value(3.94 mmol/kg),acid value(0.91 mg/g),anisidine value(1.95)and carbonyl value(0.83 mmol/kg)of red kernel walnut oil were lower and higher than those of Xiluo walnut oil.Red walnut was rich in fat and protein,its seed coat was bright red and rich in polyphenols,flavonoids and anthocyanins.Its Linoleic acid con-tent was higher than that of other common walnut varieties,The ratio ofω-6 and ω-3 series fatty acids was more reasonable,providing a good germplasm resource for walnut variety improvement.
维普
万方数据