Biological Applications of Fine Bubbles

Abstract

Recent progress in the applications of fine bubble technology to agriculture and marin is presented. Fine bubbles were examined in vitro to find whether antibacterial activities would be exhibited against Saccharomyces cerevisiae, Escherichia coli, Salumonella typhimulium, Staphylococcus aureus and Bacillus subtilis. Among them, Saccharomyces cerevisiae cells tended to grow well under both aerobic and anaerobic conditions by the action of microbubbles. Furthermore, the application of fine bubble technology has made it possible to give the high harvests of shrimps, seaweeds, strawberries, eggplants, tomatoes and pears. To clarify the underlying mechanism, interaction of microbubbles with a model protein, bovine serum albumin (BSA), was studied using fluorescence spectroscopy.Keywords: Fine bubble, Saccharomyces cerevisiae, Agriculture, Marine, Biological application 12ä42f óôõ05ïÝ]*+$ù RST%&26\b*+7Öî ×H2887897Öî*+9:7 8C&,;<=>2 8 9 a c? 0*+9:78C&@642789 7Ö0 9\78ABó x789CD} ÞE5FGH/Na93aba`p¡' "$1 9789ìí7/CD0EÞ*0N`9 78C& 9ab0`3I02J S¤0c f 134K0Ra93789L¹# ìaeMNO;P5±b88 9 a cd 5H bS¤0QRóô078\bp¡¬ae1W b010Sb

Application of a Growth Model to Validate the Effects of an Ultrafine-bubble Nutrient Solution on Dry Matter Production and Elongation of Tomato Seedlings

“…Since leaf vegetables such as spinach have a short life from sowing to harvesting, FB treatment could contribute to an expansion of leaf area and thus an increase in yield. Although increases in yield of FBtreated tomato, eggplant, and strawberry have been reported (Himuro, 2016), our results did not demonstrate consistent enhancement of DM production in UFBtreated tomato plants. Theoretically, if UFBs promote the expansion of leaf area, the yield could not be improved in the canopies of fruit vegetables such as tomatoes (Higashide, 2013(Higashide, , 2015.…”

“…Because gas can be confined in water by the UFB technique, many applications of UFBs in industry are anticipated (Nishihara and Maeda, 2014), and the use of FBs is now being investigated in agricultural production. Himuro (2016) reported that FBs increased yield in strawberry (11%), snap pea (14%), eggplant (22%), tomato (24%), and Japanese pear (25%). Minagawa et al (2016) reported that the yield of spinach grown in a 1/10 nutrient solution with MBs was comparable to that grown in a full nutrient solution under a deep-flow technique, indicating that MB application could reduce fertilizer use by 90%.…”

Effect of ultra-fine bubble water on protein crystal nucleation

“…Recently, tiny bubbles with diameters less than a micrometer, called ultra-fine bubbles (UFBs), have been used in successful applications in a wide variety of fields, such as agriculture, fisheries, food engineering, and chemical engineering, although the mechanism is still not yet well understood. [15][16][17][18][19] UFBs have a low impact on the environment and a low material cost. UFBs refer to water with bubble particle sizes at the micro-nanoscale and nanoscale, which can exist in water for more than one month.…”