Effects of harvest time on functional compounds and fruit antioxidant capacity in ten strawberry cultivars

Abstract

BACKGROUND: Huelva (Spain) is the main region for strawberry production in Europe. Most fruit production is exported for fresh consumption to European countries, where consumers demand high fruit quality and appreciate its healthy properties. Strawberry intake is a valuable source of antioxidants compounds with important health benefits. The higher the antioxidant capacity of a cultivar, the better the enhancement of human health. OBJECTIVE: The comparative knowledge of fruit composition on antioxidant compounds and its variation along the cropping season, in ten strawberry cultivars cropped at Huelva. METHODS: Fruit yield and citric acid, ascorbic acid, total phenolics, anthocyanins content as well as antioxidant capacity of fruits were evaluated in ten strawberry cultivars at three harvesting times during the 2014 field campaign. RESULTS: Yield and fruit parameters analyzed were strongly influenced by the genotype and by the time of harvesting. Strawberry fruit quality and antioxidant properties were greater when harvested from mid-to late-season and were not associated with higher yields. CONCLUSIONS: Healthy properties of strawberry fruits depend on cultivar and harvest time. Knowledge of the nutritional properties of these strawberry cultivars might translate into benefits to growers and enhancement of health for consumers.

A Pilot Study of the Photoprotective Effects of Strawberry-Based Cosmetic Formulations on Human Dermal Fibroblasts

“…According to these methods, Alba extract showed a high TAC value, with 13.62 and 53.03 μmol TE/g of FW for FRAP and ORAC, respectively. We found that TAC values of the Alba cultivar were similar to those previously reported in other strawberry varieties, and confirmed that this cultivar possesses a high TAC [ 4 , 6 , 11 , 12 ]. The antioxidant power of fruit is strictly correlated to the presence of efficient oxygen radical scavengers, such as vitamin C and phenolic compounds.…”

Protective Effect of Strawberry Extract against Inflammatory Stress Induced in Human Dermal Fibroblasts

“…These compounds represent, together with the other bioactive compounds present in strawberries, the elements responsible for several beneficial actions in human health as previously reported by different authors [ 24 , 25 ]. Finally, Alba extract also showed a high total antioxidant capacity (TAC) value, with 22.85, 22.64 and 7.71 μmol Trolox Equivalent/g FW for Ferric Reducing Antioxidant Power (FRAP), Trolox Equivalent Antioxidant Capacity (TEAC) and 2,2-DiPhenyl-1-PicrylHydrazyl (DPPH) respectively, confirming the results obtained for other strawberry varieties ( Table 1 ) [ 26 , 27 , 28 ].…”

Strawberry-Based Cosmetic Formulations Protect Human Dermal Fibroblasts against UVA-Induced Damage

“…HPLC-DAD/ESI-MS analysis allowed us to detect five anthocyanin pigments, with Pelargonidin (Pg) 3-glucoside (39.74 mg/100g FW) and Pg 3-malonylglucoside (6.69 mg/100g FW) representing the most relevant components (Table 1). Alba extract showed total antioxidant capacity (TAC) values of 22.64, 7.71, and 22.85 µmol Trolox Equivalent/g FW for Trolox Equivalent Antioxidant Capacity (TEAC), 2,2-DiPhenyl-1-PicrylHydrazyl (DPPH) and for Ferric Reducing Antioxidant Power (FRAP), respectively, confirming the results obtained with other strawberry varieties (Table 1) [8,14,29]. Finally, the Alba cultivar possessed 0.99 µg of folinic acid calcium salt hydrate/g FW and 0.06 µg of 5-methyltetrahydrofolic acid/g FW (Table 1): these folate compounds are responsible, synergistically with other strawberry bioactives, for several health effects, as previously highlighted by different authors [30,31].…”