Changes in physicochemical properties at different development stages of Hexachlamys edulis fruit, an underutilized South American species
| Autor: | Diana Teresita Constenla, Ignacio S. Povilonis, Miriam Elisabet Arena, Silvia Radice, Virginia Borroni |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Chlorophyll b
chemistry.chemical_classification H1-99 Multidisciplinary Science (General) DPPH Titratable acid Chlorophylls Hexachlamys edulis Carotenoids Social sciences (General) chemistry.chemical_compound Horticulture Q1-390 chemistry Soluble solids Phenols Polyphenol Chlorophyll Tannic acid Carotenoid |
| Zdroj: | Heliyon, Vol 7, Iss 11, Pp e08323-(2021) |
| ISSN: | 2405-8440 |
| Popis: | The aim of this work was to study the evolution of fruit size and weight together with the soluble solid and total titratable acidity contents during development of Hexachlamys edulis fruit. Also, the patterns of accumulation of chlorophylls, carotenoids, phenols and antioxidant activity were analysed to define the optimal time for harvesting to obtain maximum nutraceutical characteristics. Fruits were harvested from H. edulis plants growing at the experimental field of the University of Moron (Moreno, Buenos Aires, 34°35'4.98" SL, 58°48'52.09" WL, 14 m.a.s.l.). Fresh fruit weight was significantly higher in Medium ripe, Ripe and Overripe fruits (40.1, 39.6 and 38.5 g, respectively) than in Unripe fruits (19.5 g). Soluble solids/total titratable acidity was significantly higher in Overripe fruits (7.3) than in Unripe, Medium ripe and Ripe fruits (3.7 to 4.5). Total polyphenols were maximum in Unripe fruits (905.8 mg tannic acid/100 g fresh fruit weight) decreasing during the fruit development (426.2 to 130.4 mg tannic acid/100 g fresh fruit weight). Also, DPPH radical scavenging activity was significantly higher in Unripe fruits (75.7%) compared with Medium ripe, Ripe and Overripe fruits (64.1 to 17.0%). Positive and significant correlations were observed between total polyphenol content and DPPH radical scavenging activity at each extract concentration (r= 0.74, 0.87, 0.74 and 0.60 for 1.25; 2.50; 5.00 and 12.50 mg/mL, respectively). Total carotenoid content increased during fruit development while at the same time decreased chlorophyll content. Chlorophyll b is the main chlorophyll found. Chromatographic analysis showed that lutein is the main carotenoid found in H. edulis fruits, followed by β-cryptoxanthin and β-carotene. As shown by the chromatograms at 280 nm, the concentration of biophenols and the complexity of the biophenol profile decreases during fruit development. Levels of polyphenols and pigments together with the antioxidant activity allow us to consider H. edulis fruit as a functional food. |
| Databáze: | OpenAIRE |
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