Contents of Phenolic Compounds and trans-Resveratrol in Different Parts of Korean New Grape Cultivars

Abstract

The ethanol solvent extracts obtained from the pulp, skin, seeds, leaves, fruit stems, and pruning stems of four Korean new grape varieties ("Dunoori," "Narsha," "Cheongsoo," and "Heukbosek"), as well as "Campbell Early," and "Muscat Bailey A (MBA)" were evaluated for their total phenolic and anthocyanin contents. The concentrations of four phenols of biological interest, catechin, epicatechin, quercetin, and resveratrol in the different parts were quantified by highperformance liquid chromatography-ultraviolet analyses. The skin of "Narsha" and "Heukbosek", the leaves of "Narsha", the fruit stems of "MBA", and the pruning stems of "Campbell Early" and "Heukbosek" had the highest resveratrol content. In particular, the resveratrol in the fruit stems of "MBA" had the highest concentration as compared to the other varieties in the different parts. The seeds of "MBA," and the fruit stems of "MBA" and "Heukbosek" had the highest catechin content. Epicatechin was detected in the seeds, fruit stems, and pruning stems. Quercetin was detected only in the leaves. In summary, the catechin and epicatechin contents were significantly higher than the quercetin and resveratrol contents. The concentrations of the physiologically active components present in the grapes were high in the non-edible parts than in the edible parts; therefore, they could be useful in industrial applications.

In vitro activities of Grape Pruning Stems for Application of Cosmetic Ingredients

“…현재 우리나라에서 재배되고 있는 포도는 미국종(Vitis labrusca L.), 유럽종(Vitis vinifera L.) 및 이들 상호간의 교잡종(Vitis labruscana L.)등 3종으로 크게 나눌 수 있다. 우리나라에서는 1906년 이후 수많은 포도 품종을 외국으로부터 도입하여 시험 재배하기 시작하였지만 구미지역에서 도입한 품종들은 모두 도태되었고, 1909년에 도입한 캠벨얼리 품종이 우리나라 환경 에 가장 잘 적응하여 지금까지도 주 재배품종으로 재배되고 있다 [5].…”

Biological Activity Evaluation of Olive, Grape, and Fig at Various Mixing Ratios

“…http://dx.doi.org/10.20402/ajbc.2023.0094 (flavonol), 페놀산(phenolic acid), 플라바놀(flavanol) 등의 다양한 폴 리페놀류가 함유되어 있다 (Chang et al, 2013). 또한, 포도의 과육 외에 껍질, 씨앗에서도 활성 성분들이 다양하게 함유되어 있어 항당 뇨, 심장 및 간 보호 효과 등이 있는 것으로 보고되어 있다 (Nassiri-Asl et al, 2016).…”