Phenolic Compounds in Red Fruits Produced in Organic Farming at Maturation Stage

The agricultural organic farming is different from
conventional farming in a way that is aimed at providing a balanced
and constructive action in agricultural systems. With the increase in
intensive agriculture, undesirable changes were being observed in
ecosystems with irreparable damage being caused to the natural
equilibrium. This is the reason for the increasing interest in organic
farming as an environment friendly agricultural production method.
In the present work three red fruits produced in organic farming were
analyzed, namely raspberry, gooseberry and blueberry. The samples
were harvested in a local farm when at plain maturation. The results
obtained allowed to conclude that the blueberry contained higher
amounts of phenolic compounds, total tannins and total anthocyanins
than raspberry and gooseberry. Furthermore, the HPLC analysis
allowed to identify monomeric anthocyanins and phenolic acids in
the three fruits studied.





References:
<p>[1] Su M-S, Chien P-J (2007) Antioxidant activity, anthocyanins, and
phenolics of rabbiteye blueberry (Vaccinium ashei) fluid products as
affected by fermentation. Food Chemistry, 104, 182-187.
[2] Koca I, Karadeniz B (2009) Antioxidant properties of blackberry and
blueberry fruits grown in the Black Sea Region of Turkey. Journal
Scientia Horticulturae 121, 447-450.
[3] Singleton, V. L., &amp; Rossi, A. (1965). Colorimetric of total phenolics
with phosphomolybdic-phosphotungstic acid reagents. American Journal
of Enology and Viticulture, 16, 144-158.
[4] Ribereau-Gayon, P., &amp; Stonestreet, E. (1966). Dosage des tanins du vin
rouge et determination de leur structure. Chimie Anal, 48, 188-196.
[5] Boulton, R. (2001). The copigmentation of anthocyanins and its role in
the color of red wine: A critical review. American Journal of Enology
and Viticulture, 52(2), 67-87.
[6] Sun, B., Leandro, M. C., de Freitas, V., &amp; Spranger, M. I. (2006).
Fractionation of red wine polyphenols by solid-phase extraction and
liquid chromatography. Journal of Chromatography A, 1128, 27-38.
[7] Dallas, C., &amp; Laureano, O. (1994). Effcts of pH, sulfur-dioxide, alcohol
content, temperature and storage time on color composition of a young
portuguese red table wine. Journal of the Science of Food and
Agriculture, 65(4), 477-485.
[8] Pertuzatti PB, Jacques AC, Zambiazi RC (2007) Rela&ccedil;&atilde;o de
Fitoqu&iacute;micos na casca e polpa de mirtilo (Vaccinium ashei Reade). XVI
Congresso de Inicia&ccedil;&atilde;o Cient&iacute;fica. Faculdade de Agronomia Eliseu
Maciel.
[9] Ob&oacute;n JM, D&iacute;az-Garc&iacute;a MC, Castellar MR (2011) Red fruit juice quality
and authenticity control by HPLC. Journal of Food Composition and
Analysis. 1-12.
[10] Goiffon JP, Mouly PP, Gaydou EM (1999) Anthocyanic pigment
determination in red fruit juices, concentrated juices and syrups using
liquid chromatography. Analytica Chimica Acta 382, 39-50.
[11] Wu X, Prior R (2005) Systematic identification and characterization of
anthocyanins by HPLC-ESI-MS/MS in common fruits in the United
States: fruits and berries. Journal of Agricultural and Food Chemistry,
53, 2589-2599.
[12] Del Rio D, Borges G, Crozier A (2010) Berry flavonoids and phenolics:
bioavailability and evidence of protective effects. British Journal of
Nutrition 104</p>