- 著者
- Amalia Ghaisani Komarudin Daisuke Nei Hiromi Kameya Itaru Sotome Tetsuya Araki
- 出版者
- Japanese Society for Food Science and Technology
- 雑誌
- Food Science and Technology Research (ISSN:13446606)
- 巻号頁・発行日
- pp.FSTR-D-23-00011, (Released:2023-07-03)
Non-thermal atmospheric plasma has emerged as a promising alternative sanitizer because of the presence of highly reactive oxygen species (ROS). This study investigated an integrated bubble-assisted method for more efficient distribution of the reactive species. We aimed to evaluate the antibacterial activity of the plasma-bubbling system against E. coli O157:H7 and determine the presence of reactive species. Two approaches were investigated: direct treatment and plasma-activated water (PAW) generation, using a plasma jet and pure oxygen. E. coli numbers were reduced by 3.3-log within 5 min of PAW treatment, whereas direct treatment achieved a higher log reduction, to below the detection limit, in 3 min. Study of selected scavengers of relevant ROS revealed that hydroxyl radicals (•OH) and singlet oxygen (1O2) are the primary short-lived reactive species. Based on these results, our plasma-bubbling treatment shows promise as an alternative water-based sanitizer.
- 著者
- Ken Tokuyasu Kenji Yamagishi Junko Matsuki Daisuke Nei Tomoko Sasaki Masakazu Ike
- 出版者
- The Japanese Society of Applied Glycoscience
- 雑誌
- Journal of Applied Glycoscience (ISSN:13447882)
- 巻号頁・発行日
- vol.68, no.4, pp.77-87, 2021-11-20 (Released:2021-11-20)
- 参考文献数
- 28
- 被引用文献数
- 5
Pulverization is a potentially powerful solution for the resource management of surplus- and non-standard agricultural products, maintaining their nutritional values for long and ensuring their homogeneity, whereas their original textures could disappear to narrow the application ranges. Therefore, new technologies should be developed for reconstructing the powders to provide them with new physical characteristics. Herein, we developed a novel food material, nata puree (NP), by nata de coco (bacterial cellulose gel) disintegration with a water-soluble polysaccharide using a household blender. The process worked well with (1,3)(1,4)-β-glucan (BGL) as the polysaccharide, which could be substituted with barley extract. Lichenase treatment of the NP dramatically modified its physical properties, suggesting the importance of the BGL polymeric forms. NP exhibited distinct potato powder and starch binding activities, which would be attributed to its interactions with the cell wall components and a physical capture of powders by the NP network, respectively. NP supplementation into the potato paste improved its firmness and enabled its printable range shift for 3D food printing to a lower powder-concentration. NP also promoted the dispersion of powders in its suspension, and designed gelation could also be successfully performed by the laser irradiation of an NP suspension containing dispersed curdlan and turmeric powders. Therefore, NP could be applied as a powder modifier to a wide range of products in both conventional cooking, food manufacturing, and next generation processes such as 3D food printing.