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- MakaleAçık Erişim2020Scopus SJRQ1Effect of ultrasonication treatment on structural, physicochemical and bioactive properties of pasteurized rosehip (Rosa canina L.) nectar
Atalar, Ilyas; Saricaoglu, Furkan T.; Odabas, Halil I.; Yilmaz, Volkan A.; Gul, Osman
The effect of ultrasonication process (US) on the physical and bioactive properties of pasteurized rosehip nectar was investigated. In order to solve sedimentation problem, two amplitude levels (50 and 100%) and different treatment times (5, 10, 15 and 30 min) were applied to rosehip nectars. Mean particle size decreased as amplitude and treatment time increased. US treatment caused to increase in redness and yellowness values of nectars and also color change was found noticeable as 1.9-2.6 at 100% amplitudes. US treated samples showed no sedimentation during storage for 15 days while control sample displayed 74% colloidal stability. All samples showed shear-thinning behavior and were characterized as weak gel network. Total phenolic and carotenoid contents and antioxidant activity was increased by US treatment, however, ascorbic acid content decreased. US treatment can be an alternative technology preventing sedimentation problems during shelf life with minimally affecting bioactive and physical properties of rosehip nectar.
AtıfScopus19WoS12OpenAlex20
İncele - MakaleAçık Erişim2014Scopus SJRQ2The main quality attributes of non-sprayed cherry laurel (Laurocerasus officinalis Roem.) Genotypes
Yildiz, Hilal; Ercisli, Sezai; Narmanlioglu, Haluk Kemal; Guclu, Saban; Akbulut, Mustafa; Turkoglu, Zumrut
Cherry laurel (Laurocerasus officinalis) is naturally growing in black sea region in Turkey and the trees has not been spraying with pesticides. In natural growing conditions, all cherry laurel genotypes particularly fruits are seems resistant against pests. Astringent nature of fruits forms a barrier for pests. A total twelve cherry laurel accessions were harvested at full maturation time from various sites in Of district located in eastern black sea region in Turkey. Fruits were analyzed for their total phenolic (TP), total monomeric anthocyanin (TMA), total carotenoid (TC), Vitamin C and for their antioxidant capacity by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) in fruit flesh extract. Variability among accessions was greatest for total phenol (TP) and total anthocyanins content ranged from 154 to 213 mg GAE per 100 g and 397 to 519 mg per 100 g. The results indicated that cherry laurel fruits are superior and unique in terms of bioactive content in particular compared to bioactive rich fruit species.
AtıfScopus12WoS11OpenAlex15İncele