Yousef Lotfi; Esmaeil Khaleghi; Norollah Moallemi
Abstract
Given that, the qualitative characteristics of olive oil are influenced by environmental conditions and cultivars. Therefore, this study was carried out to investigate some of the oil qualitative characteristics of Tarom 2 and Dezful cultivars of olive as a randomized complete block design with 3 replications ...
Read More
Given that, the qualitative characteristics of olive oil are influenced by environmental conditions and cultivars. Therefore, this study was carried out to investigate some of the oil qualitative characteristics of Tarom 2 and Dezful cultivars of olive as a randomized complete block design with 3 replications at Shahid Chamran University of Ahvaz during 2016-2017. The results indicated that, the oil extracted from Tarom 2 cultivar exhibited the highest peroxide value (9.25 meq of O2/ kg of oil), chlorophyll content (8.10 mg/kg of oil), and carotenoid (0.16 mg/kg of oil) and K232 and K270 extinction coefficients of 2.32 and 0.61, respectively. However, total phenolic content of the oil extracted from Dezful cultivar (552.66 mg/kg of oil) was higher than that of the other cultivar. In addition, the highest oleic acid content (58.52%) and lowest palmitic acid content (17.6%) were measured on the oil obtained from the Tarom 2 cultivar, while the oil extracted from Dezful cultivar showed the highest linoleic acid content (18.05%). Furthermore, oleic acid-to-linoleic acid ratio was higher in the oil extracted from the Tarom 2 cultivar rather than the one taken from the Dezful cultivar. Therefore, based on the results obtained from the experiment, the oil extracted from Tarom 2 cultivar is expected to exhibit higher oxidative stability than that of the Dezful cultivar.
Shadab Faramarzi; Abbas Yadollahi; Mohsen Barzegar; Ghasem Karimzadeh
Abstract
This study was conducted to evaluate the quality of the red flesh apples and Golab cultivars. Two Iranian red flesh apples from Shahroud and four Golab cultivars as well as ‘Gala’ as control from Damavand were selected in Summer 2012. Fruit physical characteristics including length, ...
Read More
This study was conducted to evaluate the quality of the red flesh apples and Golab cultivars. Two Iranian red flesh apples from Shahroud and four Golab cultivars as well as ‘Gala’ as control from Damavand were selected in Summer 2012. Fruit physical characteristics including length, diameter, fresh weight and dry weight, firmness, color and their parameters were evaluated for each cultivar. The measured chemical properties were including total soluble solids (TSS), titrable acidity (TA), TSS: TA, total phenol content (TPC) and 50 percent inhibitory activity of DPPH radical. Results showed that ‘Bekran’ and ‘Bastam’ red flesh genotypes had the highest dry weights (15.44 and 15.07 g, respectively). The highest and lowest firmness were in ‘Bekran’ red flesh and ‘Golab-e Kermanshah’ (5.65 and 2.82 N/mm2, respectively). The highest TPC was determined in two red flesh apples ‘Bekran’ and ‘Bastam’ (4481.01 and 4011.73 mg GAE/100 g FW, respectively). The lowest TPC was detected in ‘Atlasi’ (2596.05 mg GAE/100 g FW). The highest IC50 was observed in ‘Bekran’, ‘Golab-e Kermanshah’ and ‘Gala’. Despite the fact that Iran is a major producer of apple in the world, but it does not benefit of export. Growing cultivars with improved physicochemical properties can help our country to boost its apple export status.