The study was performed to investigate basic tree growth and fruit characteristics of ‘Nero’ black chokeberry (Aronia melanocarpa) depending on the different cultivation regions and altitudes in 2014, 2015. Tree growth and change of developmental stages of ‘Nero’ were similar regardless of meteorological environment of the four cultivation regions (Danyang, Okcheon, Yeongdong, and Geumsan) in 2014. Fruit characteristics of ‘Nero’ were significant differences in berry weight and anthocyanin content among the four orchards due to difference in cultivation techniques and relatively wide daily temperature range just before harvest, respectively. Tree growth and change of developmental stages of ‘Nero’ grown at the two orchards with different altitudes appeared to be similar during the successive years 2014 and 2015. Soluble solids content of the berries cultivated at low altitude (117 m) was higher than at high altitude (342 m). Acidity showed an inverse pattern with soluble solids content. Anthocyanin content increased progressively until at the middle of August, 2014-15 and then it decreased. Our results showed that black chokeberry is a species adaptive to the domestic environment as there were no differences in tree growth and change of developmental stages of ‘Nero’. Considering fruit quality of black chokeberry such as soluble solids content, acidity, and anthocyanin content, our results suggest that optimal harvest period of black chokeberry ‘Nero’ is August 8 to 19.

Effects of different soil water conditions on fruit characteristics were investigated in 5-year-old ‘Nero’ black chokeberry trees (Aronia melanocarpa). Three kinds of drought stresses, including low water deficit, severe water deficit, and very severe water deficit, due to decline of soil water decreased the fruit quality of weight of 10 berries, soluble solid content, and anthocyanin, compared with the control (consistent water supply) during the harvest period. After longer drought stress, supply of soil water could induce berry cracking because cell size of epidermis of fruits contracted, whereas cell size of sub-epidermis and flesh expanded. Thus periodic water supply using water supply facility is needed for yield and quality of ‘Nero’ black chokeberry fruits.

The purpose of this study was to measure the antioxidant activity and bioactivity of black chokeberry (Aronia melanocarpa). The black chokeberry was known to contain many physiologically active substance, such as ascorbic acid, anthocyanin, quercetin. We extracted black chokeberry powder from four solvents such as chloroform:methanol(CM, 2:1, v/v), distilled water (DW), 70% ethanol, 70% methanol. After that, we determined anthocyanin, total phenol, flavonoid content, DPPH radical scavenging activity, ABTS radical scavenging activity, ferric reducing antioxidant power, reducing power and Nitrite scavenging activity of black chokeberry extracts and as results of comparing each extract. respectively. From the above results shows that antioxidant activity and bioactivity of black chokeberry extracts was the highest in 70% methanol (p<0.05). The results suggest that black chokeberry can be used as nutraceutical foods and natural antioxidant.

본 연구에서는 페놀성물질 및 안토시아닌을 함유하고 있어 다양한 생리활성을 가지는 아로니아의 산업적 이용 증대 및 기능성식품 소재 개발을 목적으로 열수추출, 50% 에탄올 추출 및 50% 메탄올을 사용하여 추출물을 제조하였으며 추출용매에 따른 생리 활성을 조사하였다. 추출수율은 50% 에탄올, 열수 및 50% 메탄올 추출물 순으로 나타났으며, 총 당 함량은 35.56~37.68 g/100 g으로 유의적인 차이는 나타나지 않았다. 총 안토시아닌 함량은 50% 메탄올 추출물이 395.10 mg/100 g으로 가장 높은 함량을 나타내었으며, 50% 에탄올 및 열수추출물이 각각 318.61 mg/100 g과 252.82 mg/100 g이었다. 50% 메탄올 추출물의 안토시아닌조성은cyanidin-3-O-galactoside, cyanidin-3-O-arabinoside 및 cyanidin-3-O-glucoside순이었으며, 100 g당 각각 364.65 mg, 163.06 mg 및 35.69 mg으로 가장 높은 함량을 나타내었다. 총 페놀 함량은 50% 에탄올 및 50% 메탄올 추출물에서 각각 121.38 mg/g 및 122.43 mg/g으로 열수추출물 80.14 mg/g보다 유의적으로 높은 함량을 나타내었으며, 총 플라보노이드 함량은 총 페놀 함량과 유사한 경향을 나타내었다. ORAC은 열수 추출물, 50% 에탄올 및 50% 메탄올 추출물에서 각각 715.66μM/g, 768.15μM/g 및 780.77μM/g로 나타나 50% 에탄올 및 50% 메탄올 추출조건의 항산화 활성이 높게 나타났다. DPPH radical 소거활성은 50% 에탄올 및 50% 메탄올 추출물이 100~1,000μg/mL 농도에서 각각 7.96~70.01% 및 8.90~69.21%로 높은 활성을 나타내었으며, superoxide radical 소거활성은 모든 추출물에서 농도가 증가함에 따라 소거활성이 증가하였다. FRAP는 100~1,000μg/mL 농도에서 50% 에탄올 추출물이 57.14~817.87μM이었고 50% 메탄올 추출물이 67.32~812.78μM로 나타나 높은 함량을 보여주었다. Tyrosinase 저해활성은 50% 에탄올 추출물이 100~1,000μg/mL의 농도에서 23.03~33.82%로 가장 우수한 활성을 나타내었다. 인간 자궁경부암세포주인 HeLa에 암세포생육 저해활성을 분석한 결과 50% 에탄올 추출물이 100~1,000μg/mL 농도에서 6.58~76.86%로 유의적으로 높은 저해활성을 나타내었다. 따라서, 50% 에탄올 추출방법이 아로니아의 생리 활성이 우수한 추출물 제조방법으로 적합하였으며 기능성 식품 소재 개발에 있어 산업적으로 적용 가능할 것으로 사료된다.