The Effects of Greenhouse Cultivation on the Contents and Activities of Antioxidant Compounds of Tomatoes
In the experiment, Cherry and ordinary tomatoes were used to compare the effect of greenhouse conditions and open cultivation models on their yield and anti-oxidation activity. The results showed that the yields of tomato varieties in plastic tunnel were all lower than those in open field. In addition, the contents of Lycopene, Vitamin C , total phenolics acid, glutathione and anti-oxidation activity in Cherry tomato of plastic tunnel were all higher than those in the open field, but the β-carotene and Vitamin E contents showed in a contrary tendency. At the same time, no significant difference of total flavonoid content was observed. On the other hand, the contents of Lycopene and Vitamin C in ordinary tomatoes showed the similar tendency with Cherry tomato. However, the β-carotene and Vitamin E contents and the anti -oxidation activity were observed on the contrary results. And no significant difference of total falconoid, total phenolics and glutathione contents was observed in the ordinary tomatoes between cultivation models. The results indicated that the antioxidant content and anti-oxidation activity of tomatoes were not only affected by the changes of environmental factors, but also influenced by the varieties.