TY - JOUR T1 - INVESTIGATION OF CHANGES IN SOME BIOACTIVE PROPERTIES OF PHENOLIC EXTRACTS FROM PULP AND SEED TISSUES OF ZIZIPHUS JUJUBA DURING IN VITRO DIGESTION TT - ZIZIPHUS JUJUBE (HÜNNAP) İÇ VE ÇEKİRDEK DOKULARINDAN FENOLİKLERİN IN VITRO SİNDİRİM SIRASINDA BAZI BİYOAKTİF ÖZELLİKLERİNDEKİ DEĞİŞİMİN ARAŞTIRILMASI AU - Yücetepe, Aysun AU - Şensu, Eda AU - Duran, Ayhan AU - Özçelik, Beraat PY - 2023 DA - June DO - 10.15237/gida.GD23033 JF - Gıda JO - GIDA PB - Gıda Teknolojisi Derneği WT - DergiPark SN - 1300-3070 SP - 602 EP - 613 VL - 48 IS - 3 LA - en AB - In this study, changes in angiotensin-I converting enzyme (ACE) inhibitory, α-amylase inhibitory and antioxidant activities, total phenolic content (TPC), total monomeric anthocyanin content (TMAC) of ultrasonic phenolic extracts from pulp and seed of Ziziphus jujuba were investigated during in vitro digestion. Bioaccessible fractions of phenolics in seed and pulp extracts were calculated as 23.24±4.46% and 9.43±0.24%, respectively. Moreover, bioaccessibility for TMAC in seed extracts (147.83±9.20%) was higher than pulp (15.76±3.89%) (P<0.05). A decrease in the antioxidant activity of the extracts occurred after in vitro digestion (P<0.05). The ACE inhibitory activity of undigested extracts from seed (86.04±0.00%) was higher than that of the undigested pulp extract (42.74±8.57%) (P<0.05). The α-amylase inhibitory activity of seed and pulp extracts was determined as 49.18±0.35% and 36.07±5.83%, respectively. The results of the study showed that ACE inhibitory activity and α-amylase inhibitory activity of the polyphenolics from pulp increased after in vitro digestion. KW - Ziziphus jujuba KW - antioxidant activity KW - ACE inhibitory activity KW - α-amylase inhibitory activity KW - anthocyanin. N2 - sindirim sırasında anjiyotensin-I dönüştürücü enzim (ADE) inhibisyon, α-amilaz inhibisyon ve antioksidan aktivitesi ile toplam fenolik madde (TFM) ve toplam monomerik antosiyanin miktarı (TMAM) üzerindeki değişiklikler incelenmiştir. In vitro sindirim sonrasında, çekirdek ve iç ekstraktlarındaki biyoerişilebilir fenolik fraksiyonlar sırasıyla %23.24±4.46 ve %9.43±0.24 olarak hesaplanmıştır. Ayrıca, çekirdek ekstraktlarında toplam monomerik antosiyaninlerin biyoerişilebilirliği (147.83±9.20%) iç ekstraktların toplam monomerik antosiyaninlerinin biyoerişilebilirliğinden (15.76±3.89%) daha yüksek bulunmuştur (P<0.05). In vitro sindirim sonrasında ekstraktların antioksidan aktivitesinde azalma meydana gelmiştir (P<0.05). Çekirdek ekstraktlarının sindirim öncesi ADE inhibisyon aktivitesi (%86.04±0.00), sindirim öncesi iç ekstraktın ADE inhibisyon aktivitesinden (%42.74±8.57) daha yüksektir (P<0.05). 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