Ethylene is a kind of gas with small molecule, which can promote the yellowing, after-ripening, aging and drop of vegetable leaves. Yellowing is an important feature for the aging of vegetables after being picked and is proved that ethylene resolves its chlorophyll; therefore, its aging process is closely related to ethylene. Broccoli will be seriously yellowed because of ethylene with low concentration, most of leaf vegetables are yellowed when meeting with ethylene and some of leaves will fall off. Some fruit vegetables, such as cucumber, will yellow because of ethylene. In addition, ethylene will lead to fibrosis of stem vegetables. For example, the harvesting cut of asparagus and bamboo shoots will generate ethylene which can promote the fibrosis of cut base in advance and the fibrosis will extend to shoot tips to decrease the edible parts. Ethylene can also degrade some vegetables, for example, it causes stored carrots to have bitter taste and causes lettuce to generate brown spots because of ethylene.

       “+Double Fresh” Preservative for Vegetables (Tablet)” which is researched and developed by the Company can retain freshness of climacteric vegetables. In addition, it can prevent the yellowing and wilting of leaf vegetables, reduce the breathing intensity and slow down the decrease of nutrition ingredient in the vegetables, keep or raise the taste of vegetables, decrease the requirements for low temperature during transport of vegetables and extend the shelf life of vegetables.

       According to the physiological-biochemical characteristics of vegetables of different varieties, and the size of boxes or bags where vegetables are packed, the Company specially prepares the preservative tablets for vegetables of different specifications. Featured by non-toxicity, harmless, economic, easy to use and obvious effect, ““+Double Fresh” Preservative for Vegetables (Tablet)” is the best fresh-keeping choice for most of producers and dealers of flowers.

       Scope of application: Broccoli, cauliflower, spoon cabbage, green bean, green pea, green soya bean, tomato, lettuce, edible podded pea, celery, young garlic shoot, cabbage, potato, carrot, onion, cedrela sinensis, soybean, broad bean, hot pepper, asparagus, Chinese parsley, cucumber, pickled cucumber, balsam pear, shallot, day lily, globe artichoke, long bean, sweet corn and eggplant, etc.