**1. Introduction**

Ozone (O3), also called trioxygen, is a gaseous substance whose molecule is formed by three oxygen atoms linked with an angular geometry. The ozone is formed by applying on the oxygen molecule enough energy to divide it forming various molecular structures [1]. This homonuclear molecule is the oxidant agent most powerful used for water and air treatment specially in disinfection processes for agriculture and food industry. Ozone is friendly with the environment and classified as Generally Recognized as Safe (GRAS) according to the Food and Drug Administration (FDA) [2].

Ozone is a universal disinfectant that reacts with the contaminant agents. It suppresses bad color and undesirable odor at the same time, destroying molds, bacteria, virus and algae [2, 3]. The deodorant action of ozone is due to the oxidation of chemical compounds such as ketones, hydrocarbons, acids, sulfides and nitrogenated derivatives [4]. Ozone oxidizes the cell wall, breaking its membrane and attacking to the DNA and RNA constituents. For this reason, the microorganisms are unable to develop immunity to the action of ozone as they do against other chemical compounds [1, 4, 5]. The use of ozone as sanitizer is effective without compromising health of consumers [6]. Traditional sanitizers are cheaper than ozone, however, sometimes they are not appropriate when a new outbreak emerges or when the presence of new food pathogens is detected [7, 8].

Ozone as a non-thermal technology is used in food preservation, which helps to improve the organoleptic characteristics of food following good manufacture practices [9]. Ozone can be pumped into a postharvest cold room. In water applications, ozone is drawn into a low negative pressure water stream using a Venturi injection system (Mazzei Company, LLT). The excess of not mixed ozone must be captured and destroyed to avoid the corrosion and personal injury [2]. A useful method of destroying the remanent ozone is combining UV light and catalytic agents such as granulated activated carbon [10]. The aim of this review is to describe several memories in the application of ozone in agriculture. Adhered to this, every project mentioned was adjusted to the state regulations achieving the expectations of the producer.
