Polyphenols, resveratrol, antioxidant activity and ochratoxin a contamination in red table wines, controlled denomination of origin (DOC) wines and wines obtained from organic farming

The effects of organic farming on antioxidant activity, CIE L*a*b* color, carotenoids composition, minerals contents, vitamin C and sensory quality of Orogrande mandarin juices were studied. Independent of the farming type, mandarin juices can be considered as good source of some important nutrients, such as potassium and antioxidant chemicals, for example, β-cryptoxanthin. Organic farming of mandarins resulted in juices with higher antioxidant activity, total carotenoids concentrations, minerals (Ca, K and Fe) contents, vitamin C content, more appealing and intense orange color and better sensory quality. For instance, organic Orogrande juice contained significantly (p < 0.001) higher total carotenoids content (22.7 ± 0.3 mg/L) than conventional juice (15.7 ± 0.4 mg/L); a similar pattern was observed for the antioxidant activity, with values being 0.076±0.004 and 0.053 ± 0.003 mM Trolox m/L in organic and convectional juices, respectively. A trained panel stated that organic Orogrande juices had higher intensities of orange color, fresh mandarin and floral aromas than conventional juices.

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Influence of different coffee drink preparations on ochratoxin A content and evaluation of the antioxidant activity and caffeine variations

Food Control ◽

10.1016/j.foodcont.2011.01.024 ◽

2011 ◽

Vol 22 (8) ◽

pp. 1240-1245 ◽

Cited By ~ 24

Author(s):

Antonello Santini ◽

Rosalia Ferracane ◽

Petra Mikušová ◽

Štefan Eged ◽

Antonia Šrobárová ◽

...

Keyword(s):

Antioxidant Activity ◽

Ochratoxin A

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Yield and Some Pomological Characteristics of Organically Grown “Alyanak” and “Hasanbey” Apricots (Prunus armeniaca L.)

10.20944/preprints201801.0190.v1 ◽

2018 ◽

Author(s):

Mehmet Polat

Keyword(s):

Antioxidant Activity ◽

Organic Farming ◽

Fruit Size ◽

Fruit Weight ◽

Prunus Armeniaca ◽

Total Phenolic ◽

Yield Value ◽

Soluble Solid ◽

Yield Values ◽

Organically Grown

This research was carried out to see the effects of organic farming and determine the yield and some pomological characteristics of apricots in Isparta, Turkey. Isparta province which is located in the west Mediterranean part of Turkey has also gained importance in terms of especially organic apricot production. Two apricot varieties (Hasanbey, Alyanak) were grown with organic farming practices in this study. These two varieties are table types apricot varieties commonly grown in Turkey’s one of the world's major producers. In this research, pomological characteristics as fruit size (fruit height, fruit width, fruit weight, fruit length), fruit firmness, pH, total soluble solid (TSS) content, titrable acidity (TA) and yield values were determined. Total phenolic and antioxidant activity were also determined. Hasanbey cultivar had higher yield value (66.21 kg/tree) than Alyanak (45.71 kg/tree) cultivar. At the same time the total phenolic content of Hasanbey (307.12 mg GAE/100g) variety was determined higher than Alyanak (175.91 mg GAE/100g). Antioxidant activity of Alyanak and Hasanbey were determined as 32.86 mg/ml IC50 and 17.37 mg/ml IC50 respectively. In terms of observed characteristics, Hasanbey cultivar was found to be prominent in Isparta. It can also been recommended for other places similar to Isparta ecological conditions (highland climate).

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