Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2068
Title: Recovery of proanthocyanidin from waste of Turkish traditional product, pekmez (molasses)
Authors: Altıok, Evren
Ülkü, Semra
Bayraktar, Oğuz
Altıok, Evren
Ülkü, Semra
Bayraktar, Oğuz
Izmir Institute of Technology. Chemical Engineering
Keywords: Vitaceae
Adsorption
Antioxidant
Extraction
Grape seed
Proanthocyanidin
Silk fibroin
Issue Date: Nov-2007
Publisher: Japanese Society for Food Science and Technology
Source: Altıok, E., Ülkü, S., and Bayraktar, O. (2007). Recovery of proanthocyanidin from waste of Turkish traditional product, pekmez (molasses). Food Science and Technology Research, 13(4), 321-326. doi:10.3136/fstr.13.321
Abstract: The possibility of recovering of proanthocyanidin (PA) from the by-product of Turkish traditional product pekmez (molasses) industry, one of the agro industries, was investigated. In order to obtain optimum extraction conditions, the effects of different solvents and their aqueous forms were studied and the highest PA concentration was achieved as 31 (±0.68)g/L with acetone/water (30: 70, v/v) solution. The correlations between phenolic contents, PA concentrations and antioxidant capacities were shown. Antioxidant capacities of extracts were determined and the comparison of them with synthetic and commercial antioxidants was performed. The antioxidant capacity of PA extract from grape seed of molasses pomace was 93 (±1.43) TEAC values, which was relatively high compared with those of the synthetic antioxidants. Silk fibroin was used as a novel adsorbent to recover the PA from the grape seed extracts. Effect of parameters such as, solid-liquid ratio, pH and initial concentration of PA on the recovery performance was investigated. All parameters were found statistically significant parameters (P < 0.005) and the best adsorption conditions were found to be pH 5.5, initial concentration as 10 g/ml and solid-liquid ratio as 0.1 g/ml, which yielded the maximum percentage of adsorbed PA amount as 85.2%.
URI: http://doi.org/10.3136/fstr.13.321
http://hdl.handle.net/11147/2068
ISSN: 1344-6606
1344-6606
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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