Effect of antioxidants and proteins on the quality of Israeli Jaffa red and blond grapefruit
MetadataShow full item record
Some biochemical characteristics of Israeli Jaffa Star Ruby ( red) and blond grapefruits were defined using atomic absorption spectrometry, antioxidant tests and the protein electrophoretic technique. It was found that the contents of dietary fibers, major and minor minerals, phenolic and ascorbic acids in both grapefruits were without significant differences. The contents of total polyphenols, anthocyanins and flavonoids were higher in red grapefruits, but also these differences were not significant. The antioxidant capacity was determined by two modified antioxidant methods, 2,2'-azinobis(3-ethylbenzothiazoline-6- sulfonate) radical cation (ABTS(+)) and scavenging activity against nitric oxide, and was compared with the Folin-Ciocalteu assay. The two antioxidant assays used have shown that the antioxidant potential of the Star Ruby ( red) grapefruit is higher than of the blond (P < 0.05) grapefruit. Proteins were extracted and separated. Some small differences were found in the sodium dodecyl sulfate-protein bands in the region of 36 kDa. Antioxidants and proteins can be used for characterization of the quality of grapefruits as a fruit diet
Is part ofEuropean Food Research and Technology, 2005, vol. 221, num. 1-2, p. 119-124
European research projects
Showing items related by title, author, creator and subject.
Enhancing the carotenoid content of tomato fruit with pulsed electric field treatments: effects on respiratory activity and quality attribute González Casado, Sandra; Martín Belloso, Olga; Elez Martínez, Pedro; Soliva-Fortuny, Robert (Elsevier, 2018)Pulsed electric field (PEF) may be used to elicit the accumulation of carotenoids in plant tissues. The stress-adaptive response to PEF is dependent on the treatments conditions and could lead to undesirable effects on the ...
Determination of naringin and hesperidin in citrus fruit by high-performance liquid chromatography. The antioxidant potential of citrus fruit Gorinstein, Shela; Huang, D.; Leontowicz, H.; Leontowicz, M.; Yamamoto, K.; Soliva-Fortuny, Robert; Martín Belloso, Olga; Matínez Ayala, A. L.; Trakhtenberg, Simon (Akadémiai Kiadó, 2006)Naringin and hesperidin in dimethyl sulfoxide extracts of citrus fruit (oranges, red and blond grapefruit, and sweeties - a hybrid of pummelo and blond grapefruit) have been analyzed by high-performance liquid chromatography ...
Enhancing hydroxycinnamic acids and flavan-3-ol contents by pulsed electric fields without affecting quality attributes of apple Ribas‐Agustí, Albert; Martín Belloso, Olga; Soliva-Fortuny, Robert; Elez Martínez, Pedro (Elsevier, 2019)Pulsed electric fields (PEF) have arisen as a promising tool for enhancing plant-based food bioactive compounds, although side effects on quality attributes might compromise consumer acceptance. This work was aimed at ...