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Red Star Ruby (Sunrise) and blond qualities of Jaffa grapefruits and their influence on plasma lipid levels and plasma antioxidant activity in rats fed with cholesterol-containing and cholesterol-free diets.
Life Sci. 2005 Sep 23; 77(19):2384-97.LS

Abstract

Bioactive compounds of peels and peeled red Star Ruby (Sunrise) and blond qualities of Jaffa grapefruits were analyzed and their antioxidant potential was assessed. The dietary fibers were determined according to Prosky et al., the total polyphenol content by Folin-Ciocalteu method and measured at 765 nm, minerals and trace elements by atomic absorption spectrometer, phenolic and ascorbic acids by HPLC and the antioxidant potential by two different antioxidant assays (DPPH and beta-carotene linoleate model system). It was found that the contents of most studied bioactive compounds in both qualities are comparable. Only the contents of total polyphenols and flavonoids were higher in red grapefruits, but not significant. The antioxidant potentials of red peeled grapefruits and their peels were significantly higher than of blond peeled grapefruits and their peels (P<0.05 in both cases). Diets supplemented with peeled red and blond qualities of Jaffa grapefruits and their peels have increased the plasma antioxidant capacity and improved plasma lipid levels, especially in rats fed with cholesterol added diet. In conclusion, both qualities of Jaffa grapefruits contain high quantities of bioactive compounds, but the antioxidant potential of red grapefruits is significantly higher. Diets supplemented with both qualities of Jaffa grapefruits improve the plasma lipid levels and increase the plasma antioxidant activity, especially in rats fed with cholesterol added diets. Jaffa grapefruits, especially their red Star Ruby quality, could be a valuable supplementation for diseases-preventing diets.

Authors+Show Affiliations

Department of Medicinal Chemistry and Natural Products, School of Pharmacy, The Hebrew University-Hadassah Medical School, Jerusalem 91120, Israel. gorin@cc.huji.ac.ilNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15964022

Citation

Gorinstein, Shela, et al. "Red Star Ruby (Sunrise) and Blond Qualities of Jaffa Grapefruits and Their Influence On Plasma Lipid Levels and Plasma Antioxidant Activity in Rats Fed With Cholesterol-containing and Cholesterol-free Diets." Life Sciences, vol. 77, no. 19, 2005, pp. 2384-97.
Gorinstein S, Leontowicz H, Leontowicz M, et al. Red Star Ruby (Sunrise) and blond qualities of Jaffa grapefruits and their influence on plasma lipid levels and plasma antioxidant activity in rats fed with cholesterol-containing and cholesterol-free diets. Life Sci. 2005;77(19):2384-97.
Gorinstein, S., Leontowicz, H., Leontowicz, M., Drzewiecki, J., Jastrzebski, Z., Tapia, M. S., Katrich, E., & Trakhtenberg, S. (2005). Red Star Ruby (Sunrise) and blond qualities of Jaffa grapefruits and their influence on plasma lipid levels and plasma antioxidant activity in rats fed with cholesterol-containing and cholesterol-free diets. Life Sciences, 77(19), 2384-97.
Gorinstein S, et al. Red Star Ruby (Sunrise) and Blond Qualities of Jaffa Grapefruits and Their Influence On Plasma Lipid Levels and Plasma Antioxidant Activity in Rats Fed With Cholesterol-containing and Cholesterol-free Diets. Life Sci. 2005 Sep 23;77(19):2384-97. PubMed PMID: 15964022.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Red Star Ruby (Sunrise) and blond qualities of Jaffa grapefruits and their influence on plasma lipid levels and plasma antioxidant activity in rats fed with cholesterol-containing and cholesterol-free diets. AU - Gorinstein,Shela, AU - Leontowicz,Hanna, AU - Leontowicz,Maria, AU - Drzewiecki,Jerzy, AU - Jastrzebski,Zenon, AU - Tapia,María S, AU - Katrich,Elena, AU - Trakhtenberg,Simon, PY - 2004/07/22/received PY - 2004/12/21/accepted PY - 2005/6/21/pubmed PY - 2005/10/5/medline PY - 2005/6/21/entrez SP - 2384 EP - 97 JF - Life sciences JO - Life Sci. VL - 77 IS - 19 N2 - Bioactive compounds of peels and peeled red Star Ruby (Sunrise) and blond qualities of Jaffa grapefruits were analyzed and their antioxidant potential was assessed. The dietary fibers were determined according to Prosky et al., the total polyphenol content by Folin-Ciocalteu method and measured at 765 nm, minerals and trace elements by atomic absorption spectrometer, phenolic and ascorbic acids by HPLC and the antioxidant potential by two different antioxidant assays (DPPH and beta-carotene linoleate model system). It was found that the contents of most studied bioactive compounds in both qualities are comparable. Only the contents of total polyphenols and flavonoids were higher in red grapefruits, but not significant. The antioxidant potentials of red peeled grapefruits and their peels were significantly higher than of blond peeled grapefruits and their peels (P<0.05 in both cases). Diets supplemented with peeled red and blond qualities of Jaffa grapefruits and their peels have increased the plasma antioxidant capacity and improved plasma lipid levels, especially in rats fed with cholesterol added diet. In conclusion, both qualities of Jaffa grapefruits contain high quantities of bioactive compounds, but the antioxidant potential of red grapefruits is significantly higher. Diets supplemented with both qualities of Jaffa grapefruits improve the plasma lipid levels and increase the plasma antioxidant activity, especially in rats fed with cholesterol added diets. Jaffa grapefruits, especially their red Star Ruby quality, could be a valuable supplementation for diseases-preventing diets. SN - 0024-3205 UR - https://www.unboundmedicine.com/medline/citation/15964022/Red_Star_Ruby__Sunrise__and_blond_qualities_of_Jaffa_grapefruits_and_their_influence_on_plasma_lipid_levels_and_plasma_antioxidant_activity_in_rats_fed_with_cholesterol_containing_and_cholesterol_free_diets_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0024-3205(05)00452-2 DB - PRIME DP - Unbound Medicine ER -