The aim of this study was to determine physicochemical characteristics in fruit of Page mandarin (Citrus reticulata) on different rootstocks. This study was conducted at Ramsar Research Institute in a completely randomized design with 4 treatments and 3 replications in 2015. The content of individual sugars in fruits was determined by HPLC. Total acidity (TA) and pH value of juice was also evaluated. Total carotenoids and chlorophylls content was measured using a spectrophotometer. Crude fat was extracted using Soxhlet`s apparatus .Crude protein was measured by Kjeldahl’s method. Total dry matter was determined by dehumidify of fruits in an oven at 80˚C. The results showed that, the highest of total sugars (107.35 mg/ mL), pH (3.50) and carotenoid (0.14 mg/ g) were in fruit of Page mandarin (Citrus reticulata) grafting on the Troyer citrange. According to results, the amount of total acid (0.73 %) of Page mandarin grafted on sour orange was higher than those of other rootstocks. تفاصيل المقالة

Given its nutritive value, mulberry is consumed both fresh and in various processed forms. This study aimed to investigate the pomological traits, chemical composition, and antioxidant activity of the fruits of white mulberry genotypes. Folin-Ciocalteau colorimetric method and aluminum chloride colorimetric method, respectively, were used to measure the content of total flavonoids and total phenols. Antioxidant properties were evaluated using a DPPH radical scavenging assay. Using HPLC glucose and fructose were found and analyzed. In all samples glucose was the dominant sugar with the highest concentration. The level of fructose (4.28 g/100 g) and glucose (5.06 g/100 g) in fruits of genotype 2 and the amount of total acid (0.21%) in the fruits of genotype 3 were higher than other genotypes. Compared to genotype 2, the antioxidant capacity of genotype 3 was noticeably higher (22%), as measured by the DPPH assay. The study demonstrated that genotypes had a significant impact on the chemical properties of mulberry fruits. A strong positive correlation was found between fructose and pH. Findings revealed useful information about chemical composition of white mulberry genotypes, which can be utilized in food industry and as valuable genetic resources for breeding programs. تفاصيل المقالة