건조방법에 따른 눈개승마의 영양성분 및 항산화효과

Abstract

The purpose of this study was investigated to compare the physicochemical components and antioxidative effecs of hot air dried Aruncus dioicus var. kamtschaticus (HAD) powder and freeze dried Aruncus dioicus var. kamtschaticus (FAD) powder. The crude fat content in the FAD was higher than in the HAD. However, there were significant differences in the moisture, crude protein, crude ash, crude fiber, and carbohydrate contents depending on the drying methods. Total amino acid and essential amino acid contents was significantly higher in the FAD sample than in the HAD sample. The major amino acids of Aruncus dioicus var. kamtschaticus powder were asparagine, aspartic acid, valine, glutamic acid, alanine, methionine, and γ-amino-n-butyric acid(GABA). Valine, phenylalanine, lysine, hstidine, aspartic acid, asparagine, glutamic acid, arginine, ornithine, and GABA contents in the FAD were higher than in the HAD, while serine, phosphoserine, proline, glycine, alanine, tyrosine, and taurine contents in the HAD were higher than in the FAD. The major fatty acids of Aruncus dioicus var. kamtschaticus powder were linolenic acid, palmitic acid, linoleic acid, and oleic acid. There ere no significant differences in saturated fatty acid, monounsaturated fatty acid, and polyunsaturated fatty acid contents depending on the drying methods; However, the pentadecanoic acid content in the HAD was higher than in the FAD, but the heptadecanoic acid and palmitoleic acid contents in the FAD were higher than in the HAD. The most abundant fatty acid in Aruncus dioicus var. kamtschaticus powder was linolenic acid, but the linolenic acid content was similar, regardless of the drying methods. The contents of malic acid and total organic acid in the FAD were higher than the HAD, while the content of succinic acid was higher in the HAD than in the FAD. Vitamin C contents were 1487.43 mg% in the HAD and 4427.26 mg% in the FAD. Vitamin E contents were 110.86 mg% in the HAD and 154.73 mg% in the FAD. The total polyphenol contents of the Aruncus dioicus var. kamtschaticus ethanol extract were 61.51 mg GAE/g in the HAD and 80.61 mg GAE/g in the FAD. The total flavonoid contents of the Aruncus dioicus var. kamtschaticus ethanol extracts were 229.08 mg QE/g in the HAD and 313.42 mg QE/g in the FAD. Total polyphenol and flavonoid contents were significantly higher in the FAD than in the HAD. Moreover, the DPPH and ABTS radical scavenging activities of the FAD was significantly higher than those of the HAD. These results may provide the basic data for follow up studies seeking a better understanding of the functional properties and can be recommended as an functional food material of Aruncus dioicus var. kamtschaticus powder.