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Improving 'Nanguo' pear fungal disease and storability by chitosan coating combined with diepoxy-poly (ethylene glycol)

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FOOD BIOSCIENCE 2023年第3期53卷 2907-2917页

作者： Yan, Xirui Dong, Tungalag Yun, Xueyan tanaka, fumihiko tanaka, Fumina Wardana, Ata Aditya Meng, Fanze Technol Inner Mongolia Agr Univ Coll Food Sci 306 Zhaowuda Rd Hohhot 010018 Inner Mongolia Peoples R China Kyushu Univ Grad Sch Bioresource & Bioenvironm Sci 744 MotookaNishi Ku Fukuoka Fukuoka 8190395 Japan Kyushu Univ Fac Agr Lab Postharvest Sci W5-874744 MotookaNishi Ku Fukuoka Fukuoka 8190395 Japan Univ Coll Dublin Dublin Ireland Bina Nusantara Univ Fac Engn Food Technol Dept Jakarta 11480 Indonesia

A protective coating can aid in reducing mechanical harm to food during harvesting, handling, and trans-portation, resulting in fewer bruises, wounds, and other injuries, thereby improving the overall quality of the produce. In this study, coatings with 1% (w/v) chitosan (CS) and 0.6% (w/v) diepoxy-polyethylene glycol (PEG) were prepared by the co-blending method. According to the findings, increasing the PEG concentration enhanced the moisture content, water vapor permeability, and contact angle properties. In addition, when viewed by scanning electron microscopy (SEM), the morphology of the films containing more PEG appeared rougher and denser. In addition, at room temperature, the freshness of 'Nanguo' pears and the antifungal efficacy of the coating against Penicillium italicum (P. italicum) and Botrytis cinerea (B. cinerea) were evaluated. According to the findings, the weight loss or total soluble solids of pears coated with CS or PEG did not differ significantly during storage. The fruit respiration rate and ascorbic acid (AA) and malondialdehyde (MDA) contents were maintained after coating CS insertion with PEG. The CS-PEG composite coating successfully inhibits the growth of P. italicum and B. cinerea (P. italicum > B. cinerea), according to an in vitro antifungal activity assay that was improved by adding PEG. According to principal component analysis (PCA) results, the CS-PEG coating significantly impacts pear sensory evaluation and firmness. At room temperature, the shelf life of pears with a CS-PEG coat has been extended from 15 days to 25 days.

关键词： Cross-linked Antifungal Pear shelf life Biomaterial Coating preservation

New insights into the effects of molecular weight and end group on the temperature-induced phase transition of poly(N-isopropylacrylamide) in water

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Science China Chemistry 2013年第1期56卷 56-64页

作者： QIU XingPing KOGA Tsuyoshi tanaka fumihiko WINNIK Fran oiseM. Department of Chemistry and Faculty of Pharmacy University of MontrealCP 6128 Succursale Centre VilleMontrealQC H3C 3J7Canada Department of Polymer Chemistry Graduate School of EngineeringKyoto UniversityKatsuraKyoto 615-8510Japan Institute of Theoretical Polymer Science (ITPS) 5-19-2 Ozenji Asao-kuKawasaki 615-8510Japan World Premier International (WPI) Research Center Initiative International Center for Materials Nanoarchitectonics (MANA) and National Institute for Materials Science (NIMS)1-1 NamikiTsukuba 305-0044Japan

In an attempt to clarify issues related to the molecular weight dependence of the phase transition of poly(N-isopropylacrylamide) (PNIPAM) in water,we prepared a library of PNIPAM samples of well-controlled molecular weight (7000 to 45000 g/mol) bearing identical groups on each chain *** polymers were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization of N-isopropylacrylamide (NIPAM) with a bifunctional chain tranfer agent and further end group *** effects of the end group chemical structure,hydroxyethyl (HE),propargyl (Pr),chloroethyl (CE),n-butyl (nBu),n-hexyl (nHe),and isobutylsulfanylthiosulfanyl (IBS) on the phase transition temperature of aqueous PNIPAM solutions were investigated by high-sensitivity differential scanning calorimetry (HS-DSC),yielding the enthalpy ΔH and the endotherm maximum temperature (T M),and turbidimetry,providing the cloud point (T CP) of each *** T CP and T M of the PNIPAM sample of lowest molar mass (M n 7,000 g/mol,0.5 g/L) ranged,respectively,from 38.8 to 22.5 °C and 42.2 to 26.0 °C,depending on the structure of the end-group,whereas H showed no strong end-group *** phase transition of all polymers,except,-di(n-butyl-PNIPAM),exhibited a marked dependence on the polymer molar mass.

关键词： poly(N-isopropylacrylamide) phase transition temperature high-sensitivity differential scanning calorimetry turbidimetry end group effect

Preserving mandarin quality during ambient storage using edible coatings of pregelatinized corn starch Pickering emulsions and essential oil

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FOOD BIOSCIENCE 2023年第3期53卷 1920-1930页

作者： Wigati, Laras Putri Wardana, Ata Aditya Jothi, Jakia Sultana Leonard, Sergio Van, Tran Thi Yan, Xirui tanaka, Fumina tanaka, fumihiko Kyushu Univ Grad Sch Bioresource & Bioenvironm Sci 744 MotookaNishi Ku Fukuoka Fukuoka 8190395 Japan Bina Nusantara Univ Fac Engn Dept Food Technol Jakarta 11480 Indonesia Kyushu Univ Fac Agr 744 MotookaNishi Ku Fukuoka Fukuoka 8190395 Japan Chattogram Vet & Anim Sci Univ Dept Food Proc & Engn Chattogram 4225 Bangladesh Kyushu Univ Sch Agr 744 MotookaNishi Ku Fukuoka Fukuoka 8190395 Japan Vietnam Inst Agr Engn & Postharvest Technol Dept Res Preservat Technol Agr Prod Hanoi 10000 Vietnam

Fruit stored in poor conditions undergo biochemical degradations that impact fruit physical qualities, such color and firmness, and reduce beneficial nutritional content including vitamins, flavonoids, phenols, and antioxi-dants. This study investigated the impact of a postharvest treatment of mandarins with edible coatings to prevent biochemical degradations and minimize color changes. The edible coating evaluated in this study is a composite of pregelatinized corn starch (PS), with a cellulose nano fiber (CF) Pickering emulsifier, and is enriched with basil essential oil (EO). The results of varying each parameter were then analyzed by the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) method to identify the best-performing edible coating. Using this method, the leading edible coating was identified as PS5EO3 formulized from 5% pregelatinized corn starch, 3% basil essential oil and 0.5% cellulose nanofiber, with a ranking of 0.721 based on quality content, and 0.676 based on percentage change in nutrients after the 12 days of storage at 25 degrees C. Mandarins coated with PS5EO3 significantly suppressed quality losses, and achieving the lowest losses of citric acid (10.45%), while maintaining color stability in terms of color density (14.97%) and percent polymer color (78.14%).

关键词： Biochemicals Color stability Edible coating Mandarin orange Storage

纳米水雾环境对新鲜农产品采后贮藏过程中失重的调控

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保鲜与加工 2011年第5期 55-55页

作者： Duong Van Hung Shengnan Tong fumihiko tanaka Eriko Yasunaga Daisuke Hamanaka Naoya Hiruma Toshitaka Uchino Graduate School of Bioresource and Bioenvironmental Sciences Kyushu University Laboratory of Postharvest Science Faculty of AgricultureKyushu University Biotron Institute Kyushu University Mayekawa Manufacturing Company

质量损失与冷害症状在新鲜农产品冷藏过程中经常发生,并会导致园艺产业巨大的经济损失。本试验分别研究了三种园艺产品,茄子(Solanum melongena)、日本芜青(Brassica rapa)和无花果(Ficus carica)在用两种类型加湿器制造的相对湿度为95... 详细信息

质量损失与冷害症状在新鲜农产品冷藏过程中经常发生,并会导致园艺产业巨大的经济损失。本试验分别研究了三种园艺产品,茄子(Solanum melongena)、日本芜青(Brassica rapa)和无花果(Ficus carica)在用两种类型加湿器制造的相对湿度为95%、温度分别为5.5℃和7℃的环境下贮藏10、6和8 d的贮藏品质。由纳米加湿器生成的水雾粒子平均直径小于100 nm,而由超声波加湿器生成的水雾粒子平均直径为216 nm。结果表明,纳米加湿器处理的日本芜菁、茄子和无花果样品的失重率分别为3.7%、5.3%和8.8%,超声波加湿器处理三种样品的失重率分别为7.3%、8.5%和14.7%。在纳米水雾贮藏室内放置的茄子果实的冷害指数要低于在超声波加湿环境中贮藏的果实。纳米水雾中的日本芜菁和无花果的气孔相比其初始状态下分别关闭了34.7μm2和51.5μm2,而在超声波水雾中则分别关闭了15.8μm2和25.5μm2。在纳米水雾中贮藏的日本芜菁的颜色要比在超声波水雾中贮藏的芫菁更绿。

关键词：质量损失冷害气孔纳米水雾超声波水雾采后贮藏

A new algorithm based on metaheuristics for data clustering

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第12期11卷 921-926页

作者： Tsutomu SHOHDOHJI fumihiko YANO Yoshiaki TOYODA Department of Computer and Information Engineering Faculty of EngineeringNippon Institute of Technology Division of Integrated Sciences J.F.Oberlin University Aoyama Gakuin University

This paper presents a new algorithm for clustering a large amount of *** improved the ant colony clustering algorithm that uses an ant’s swarm intelligence,and tried to overcome the weakness of the classical cluster analysis *** our proposed algorithm,improvements in the efficiency of an agent operation were achieved,and a new function "cluster condensation" was *** proposed algorithm is a processing method by which a cluster size is reduced by uniting similar objects and incorporating them into the cluster *** with classical cluster analysis methods,the number of steps required to complete the clustering can be suppressed to 1% or less by performing this procedure,and the dispersion of the result can also be ***,our clustering algorithm has the advantage of being possible even in a small-field cluster *** addition,the number of objects that exist in the field decreases because the cluster condenses;therefore,it becomes possible to add an object to a space that has become *** other words,first,the majority of data is put on *** are then clustered,gradually adding parts of the standby data to the clustering *** method can be adopted for a large amount of *** experiments confirmed that our proposed algorithm can theoretically applied to an unrestricted volume of data.

关键词： Metaheuristics Ant colony clustering Data clustering Swarm intelligence

Recent Research and Development of Optical Fiber Monitoring in Communication Systems

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Photonic Sensors 2013年第4期3卷 304-313页

作者： Kunihiro TOGE fumihiko ITO NTT Access Network Service Systems Laboratories NTT Corporation Tsukuba Ibaraki 305-0805 Japan

Recent progress on optical fiber monitoring in the optical communication systems is reviewed along with current optical fiber monitoring and diagnosing problems in deployed access, trunk and submarine communication sy... 详细信息

关键词： Optical fiber monitoring diagnosis PON monitoring OFDR OTDR

Mechanotransduction,nanotechnology,and nanomedicine

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The Journal of Biomedical Research 2021年第4期35卷 284-293页

作者： Xiaowei Liu fumihiko Nakamura School of Pharmaceutical Science and Technology Tianjin UniversityTianjin 300072China.

Mechanotransduction,a conversion of mechanical forces into biochemical signals,is essential for human development and *** is observable at all levels ranging from the whole body,organs,tissues,organelles down to *** results in various diseases such as muscular dystrophies,hypertension-induced vascular and cardiac hypertrophy,altered bone repair and cell *** mechanotransduction occurs at nanoscale,nanosciences and applied nanotechnology are powerful for studying molecular mechanisms and pathways of *** force microscopy,magnetic and optical tweezers are commonly used for force measurement and manipulation at the single molecular *** is also used to control cells,topographically and mechanically by specific types of nano materials for tissue *** research will become increasingly important as a sub-discipline under *** we review nanotechnology approaches using force measurements and manipulations at the molecular and cellular levels during mechanotransduction,which has been increasingly play important role in the advancement of nanomedicine.

关键词： nanomedicine mechanotransduction mechanical force differentiation tissue engineering

Molecular Functions of Oxygen-Evolving Complex Family Proteins in Photosynthetic Electron Flow

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Journal of Integrative Plant Biology 2010年第8期52卷 723-734页

作者： Kentaro Ifuku Seiko Ishihara fumihiko Sato Graduate School of Biostudies Kyoto University

Oxygen-evolving complex （OEC） protein is the original name for membrane-peripheral subunits of photosystem （PS） II. Recently, multiple isoforms and homologs for OEC proteins have been iden- tified in the chloroplast thylakoid lumen, indicating that functional diversification has occurred in the OEC family. Gene expression profiles suggest that the Arabidopsis OEC proteins are roughly categorized into three groups： the authentic OEC group, the stressresponsive group, and the group including proteins related to the chloroplast NAD（P）H dehydrogenase （NDH） complex involved in cyclic electron transport around PSI. Based on the above gene expression profiles, molecular functions of the OEC family proteins are discussed together with our current knowledge about their functions.

关键词： NDH Molecular Functions of Oxygen-Evolving Complex Family Proteins in Photosynthetic Electron Flow OEC PSII PPL

Disaster Recovery and Reconstruction Following the 2011 Great East Japan Earthquake and Tsunami: A Business Process Management Perspective

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International Journal of Disaster Risk Science 2015年第3期6卷 310-314页

作者： Natt Leelawat Anawat Suppasri fumihiko Imamura Department of Industrial Engineering and Management Graduate School of Decision Science and TechnologyTokyo Institute of Technology International Research Institute of Disaster Science Tohoku University

The Tohoku Regional Bureau(TRB) of the Ministry of Land, Infrastructure, Transport and Tourism(MLIT) performed various actions in response to the 2011 Great East Japan Earthquake and Tsunami. The total disaster recovery and reconstruction period is expected to last for 10 years, of which the first five years are regarded as the concentrated reconstruction period. As of 2013, a majority of the mega projects that involved restoration actions have been completed, which indicates a more effective rate of completion compared with the MLIT projects performed in normal non-disaster situations. This short article explains the management process of the recovery and reconstruction utilized by the TRB—an interorganizational process—from a business process management(BPM) perspective and creates a simple organization construction diagram of the entire process. The study focused on the transactions and actor roles to identify their strengths. The findings indicate the utilization of different operational procedures in some parts of the process, the importance of liaison role, as well as some obstacles. The lessons learned from this analysis can assist managers and researchers in designing and managing restoration processes for future disasters.

关键词： Business process management Disaster reconstruction Disaster recovery 2011 Great East Japan Earthquake and Tsunami