Effect of Postharvest Storage Quality of Atemoya Treated with Multiple Oxidants Containing Chlorine

Page 1

Focusing on Modern Food Industry (FMFI), Volume 5 2016 doi: 10.14355/fmfi.2016.05.001

www.fmfi-journal.org

Effect of Postharvest Storage Quality of Atemoya Treated with Multiple Oxidants Containing Chlorine Oxide by Using Electrolytic Deep Sea Water J.X. Liu1; N.T. Chen1; H.C. Huang1; C.H. Yen1; C.H. Chen1; W.W. Liao2; J.W. Yang2; S.M. Chang2; C.Y. Chang3* Department of Life Science, National Taitung University, Taiwan

1

Department of Applied Science, National Taitung University, Taiwan

2

Center for General Education, National Taitung College, Taiwan

3

*Corresponding author: cyc1136@ntc.edu.tw Abstract According to the data of Taiwan's Food and Agriculture Agency, sugar-apple is one of the important economic fruit in Taiwan. In 2001, the external sales were 5,458 tones and the export value reached to 223.16 million Taiwan dollars. It is the second largest export fruit, only less than bananas. Atemoya was the main sugar-apple species and occupied 99.3 %. The other sugar-apples were only 0.7 %. To explore the main possible reasons, Atemoya did not occur easily the dumb-fruit and blacken situation during the low-temperature storage. Therefore, Atemoya was more easily exported to overseas than the other sugar-apples. This study is expected to enhance the brine of deep seawater resource utilization by using the low valuable concentrated brine as an electrolyte material to produce an oxidant by an electrolysis procedure. Its high oxidation capacity to kill or inhibit microorganisms and to remove or inhibit the production of ethylene extends the lifetime of Atemoya. Experiments used 50 ppm multi-oxidant to do the sonication spray treatment (0 ~ 15min) and collocated with fruit bag and PE sealed bag for preservation under at 11 ℃controlled temperature. The results showed that there were the significant differences existing between the added multi-oxidant group and the controlled group in the inhibitory effect and the appearance color of fresh preservation. But there was no significant difference in sweetness and hardness. Therefore, this study had revealed that chlorine dioxide multi-oxidant could effectively sterilize the surface of Atemoya, enhance the preservation degree, and extend the shelf-life. Those results are benefit to the overseas sales and enhance economic value. Keywords Electrolytic Deep Sea Water; Chlorine Dioxide; Atemoya

Introduction With the development of society, many people have realized pathogens on the food would cause food contamination and foodborne illness. Food preservation has been attached to importance by consumers and chlorine dioxide has been proven in killing pathogens for food preservation [1, 2]. Although desalination technology is often questioned to be a controversial issue due to high costs, high energy consumption and concentrated brine release, it is a water resourcing technology positively developed in arid areas of the world. The brine produced by deep seawater reverse osmosis (RO) desalination processes causes high costs, high energy consumption and low economic value. Therefore, we utilized electrolytic catalysis technology and the concentrated brine from the deep seawater plant in Taiwan to develop a brine resource utilization process, producing a multi-oxidant with disinfection efficacy, containing chlorine dioxide (ClO2), chlorine (Cl2), ozone (O3) and hypochlorous acid (HOCl). Many studies have proved that chlorine oxide can kill many pathogens including bacteria, virus, fungi and spores. In addition, the safety of chlorine oxide has been recognized by World Health Organization (WHO) as A1 disinfecting reagent and chlorine oxide is an ideal disinfecting reagent of chlorine-based disinfectants [3-5]. Chlorine dioxide has been used in the preservation of food including vegetables, fruits, fish and meat. This 1


Turn static files into dynamic content formats.

Create a flipbook
Issuu converts static files into: digital portfolios, online yearbooks, online catalogs, digital photo albums and more. Sign up and create your flipbook.