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American Journal of Food Technology

Year: 2011 | Volume: 6 | Issue: 11 | Page No.: 974-984
DOI: 10.3923/ajft.2011.974.984

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Authors


Gilmara A.C. Fortes


Sara S. Naves


Fabiana F.F. Godoi


Alessandra R. Duarte


Pedro H. Ferri


Suzana C. Santos


Keywords


  • Myrciaria cauliflora
  • Myrtaceae
  • fruit ripening
  • terpenoids
  • tannins
  • anthocyanins
Research Article

Assessment of a Maturity Index in Jabuticaba Fruit by the Evaluation of Phenolic Compounds, Essential Oil Components, Sugar Content and Total Acidity

Gilmara A.C. Fortes, Sara S. Naves, Fabiana F.F. Godoi, Alessandra R. Duarte, Pedro H. Ferri and Suzana C. Santos
Jabuticaba is a Brazilian tree with edible grape like fruits which are consumed fresh or used to prepare jams, liqueurs and wines. The aim of this study was to identify the optimal harvest period for winemaking by monitoring chemical parameters during jabuticaba’s development. Jabuticaba fruit was analysed at four developmental stages for total acidity, reducing sugars, anthocyanins, tannins, total phenols and essential oil composition. Total acidity significantly decreased (15.46-4.56 g citric acid 100 g-1), whereas reducing sugars increased about threefold in pulps up until the full ripe stage (32.52-88.92 g glucose equivalent 100 g-1). Anthocyanin levels underwent a sharp increase in the skins reaching 22.0 mg cyanidin 3-glucoside equivalent g-1 at complete maturation. Tannins and total phenols showed no significant differences in their levels between ripe and full ripe stages. The essential oil contains 88.1% of sesquiterpene compounds, being γ-eudesmol (33.9%) and α-eudesmol (15.5%) the major constituents. Some minor terpenoids changed significantly in their contents during jabuticaba’s maturation. The monoterpenes α-pinene, β-pinene, (E)-β-ocimene, linalool and α-terpineol increased while the sesquiterpenes amorpha-4,7(11)-diene, δ-amorphene, δ-cadinene and α-cadinene decreased from green to ripe stages. However the major terpenoids showed no significant changes. Results demonstrated that the use of sugar/acid ratio and anthocyanin concentration seemed to be the most effective parameters to reveal the optimal harvest period for winemaking.
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How to cite this article

Gilmara A.C. Fortes, Sara S. Naves, Fabiana F.F. Godoi, Alessandra R. Duarte, Pedro H. Ferri and Suzana C. Santos, 2011. Assessment of a Maturity Index in Jabuticaba Fruit by the Evaluation of Phenolic Compounds, Essential Oil Components, Sugar Content and Total Acidity. American Journal of Food Technology, 6: 974-984.

DOI: 10.3923/ajft.2011.974.984

URL: https://scialert.net/abstract/?doi=ajft.2011.974.984

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