title: Bioactive compounds and antioxidant capacity of strawberry jams.
abstract: Strawberries represent the main source of ellagic acid derivatives in the Brazilian diet. They are also good sources of flavonoids, mainly anthocyanins, and phenolic acids, to which many beneficial effects have been attributed. However, as the fruit is not available all the year, the objective of this work was to determine whether the jams could also represent a good source of bioactive compounds. In the current study, five different commercially available strawberry jams were characterized in relation to flavonoids, total phenolics, free and total ellagic acid contents, and antioxidant capacity. Anthocyanins were detected only in two jams at very low content. Kaempferol glycosides were the main flavonoids present (from 0.38 to 1.05 mg/100 g fresh weight, FW), while quercetin glycosides were present in the range 0.14-1.20 mg/100 g FW. Free and total ellagic acid content ranged from 0.4 to 2.9 mg/100 g FW, and from 17.0 to 29.5 mg/100 g FW, respectively. Total phenolics varied from 58 to 136 mg/100 g FW, and the antioxidant capacity from 0.55 to 0.76 mumol BHT (Butylhydroxytoluene) equivalents/g FW. Overall, results indicated that jams can also represent a good source of antioxidant compounds, although compared to the fruit important losses seem to occur.
authors: Laboratório de Química, Bioquímica e Biologia Molecular de Alimentos, Departamento de Alimentos e Nutrição Experimental, Universidade de São Paulo, Av. Prof. Lineu Prestes 580, Bloco 14, 05508-900 São Paulo, SP, Brazil.
authors: Marcia
authors: M
authors: Da Silva Pinto
authors: Franco Maria
authors: FM
authors: Lajolo
authors: Maria Ines
authors: MI
authors: Genovese
mesh_terms: D000975:Antioxidants / Q000032:analysis* / Q000378:metabolism*; D001938:Brazil; D002851:Chromatography, High Pressure Liquid; D004610:Ellagic Acid / Q000032:analysis* / Q000378:metabolism*; D005419:Flavonoids / Q000032:analysis / Q000378:metabolism; D031985:Fragaria / Q000737:chemistry*; D006801:Humans; D062385:Hydroxybenzoates / Q000032:analysis / Q000378:metabolism; D009753:Nutritive Value
chemical_list: D000975:Antioxidants; D005419:Flavonoids; D062385:Hydroxybenzoates; D004610:Ellagic Acid; C017616:phenolic acid
references: J Agric Food Chem. 2000 Dec;48(12):6292-7
references: 11312801
references: J Agric Food Chem. 2000 Jun;48(6):2008-16
references: 10888490
references: J Agric Food Chem. 2000 May;48(5):1746-51
references: 10820089
references: J Agric Food Chem. 2005 Apr 20;53(8):2928-35
references: 15826041
references: Crit Rev Food Sci Nutr. 2004;44(1):1-17
references: 15077879
references: J Agric Food Chem. 2005 Jul 13;53(14):5640-6
references: 15998127
references: J Agric Food Chem. 2001 Aug;49(8):3651-5
references: 11513642
references: J Agric Food Chem. 2004 Mar 10;52(5):1124-31
references: 14995109
references: J Agric Food Chem. 2002 Apr 24;50(9):2581-6
references: 11958626