국내에서 주로 수입되고 있는 Cabernet Sauvignon 레드와인(미국산 5종, 칠레산 10종)의 이화학적인 품질 특성과 항산화활성 및 폴리페놀 화합물의 조성을 조사하였다. 가용성 고형분은 7.03~8.6 $^{circ}Brix$, 환원당은 2.7~6.7 g/L, 산도는 0.7~0.8% 범위이었으며, 미국산과 칠레산의 유의적인 차이는 없었다(p<0.05). 이산화황 함량은 미국산이 33 mg/L, 칠레산이 45 mg/L로 칠레산이 높았다(p<0.05). DPPH 방법과 ORAC 방법에 의한 항산화 활성과 총페놀 함량은 미국산보다 칠레산이 조금 높았으나 유의적인 차이는 없었다(p<0.05). 산 가수분해 방법으로 레드 와인 중의 폴리페놀 화합물을 HPLC로 분석한 결과 gallic acid, catechin, syringic acid, p-coumaric acid, quercetin, kaempferol의 6종이 확인되었으며, 이 중 catechin의 함량이 가장 높았고 폴리페놀화합물의 총 함량은 칠레산이 미국산에 비하여 높았다(p<0.05). 미국산과 칠레산 Cabernet Sauvignon 와인의 이화학적 특성과 항산화능은 이산화황 함량과 폴리페놀화합물의 함량이외에는 유의차가 없었다(p<0.05).
The physicochemical characteristics and antioxidant capacities of 15 red wines (Cabernet Sauvignon) from the US (5) and Chile (10) were investigated. The contents of soluble solid, reducing sugar, titratable acidity, and $SO_2$ were measured. Antioxidant capacities were examined by DPPH, ORAC assay, and total phenolic contents. In addition, polyphenols composition were analyzed by HPLC. The contents of soluble solid, reducing sugar, and acidities were 7.03~8.6 $^{circ}Brix$, 2.7~6.7 g/L, and 0.7~0.8%, respectively, and showed no differences between wines from the two countries (p<0.05). The $SO_2$ content of Chile wines was 50% higher than that of US wines (p<0.05). Antioxidant activities by DPPH assay ranged 5.58~9.80 mM and 6.77~9.48 mM in the US and Chile wines, respectively. The ORAC values of the US and Chile wines ranged 2.17~18.08 mM and 4.55~33.77 mM, respectively. The total phenolic content ranged from 1,315 to 2,651 mg/L among the US red wines, and from 1,653 to 2,493 mg/L among Chile red wines. Gallic acid, catechin, syringic acid, p-coumaric acid, quercetin, and kaempferol were identified by HPLC. The polyphenol contents of the Chile red wines were higher than those of the US red wines(p<0.05). There were no differences in the physicochemical characteristics and the antioxidant capacities of the wines from US and Chile, but only in their $SO_2$ and polyphenol contents (p<0.05).
