The incidence of Campylobacter contamination levels through Chicken-Sashimi Processing steps in A Small-scale Poultry processing plant applying the External stripping method     

Vu Minh DUC  Rina KAKIUCHI  Takeshi OBI  Hiroshi ASAKURA  Takehisa CHUMA 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2022,84(3):414

This study aimed to analyze the incidence of Campylobacter in a small-scale chicken meat processing plant producing “chicken-sashimi”, and determine the effectiveness of surface burning as a treatment during processing. The most probable number (MPN) method was used to analyze the load of Campylobacter in 48 samples from four different processing steps (de-feathering, chilling, surface burning, and final-products; 12 samples each). We found the highest load of isolated bacteria in chicken skin after de-feathering. Campylobacter was not detected after the surface burning step despite a large load of bacteria present in the cecum content. Campylobacter was absent in the final products. Adequate surface burning can avoid Campylobacter contamination of chicken sashimi in the processing plant by applying the external stripping method.  相似文献   

稻谷储藏特性及其与籼粳特性的关系研究   总被引：13，自引：2，他引：13  

曾大力  钱前  国广泰史  滕胜  藤本宽 《作物学报》2002,28(4):551-554

在小型人工气候箱中, 对400余份常规品种进行人工老化处理, 并结合随机抽取的38份材料进行了籼粳形态指数分析. 结果表明, 稻谷贮藏特性与籼粳特性之间存在极显著的相关; 在形态指数中, 抽穗时壳色、稃毛和酚反应与贮藏特性的相关性分别达0.4703、 0.4674和0.45的极显著水平, 第1～2节穗轴长和叶毛与储藏特性的相关性分别达0.  相似文献   

Evaluation of aroma compounds contributing to muskmelon flavor in Porapak Q extracts by aroma extract dilution analysis   总被引：1，自引：0，他引：1  

Hayata Y  Sakamoto T  Maneerat C  Li X  Kozuka H  Sakamoto K 《Journal of agricultural and food chemistry》2003,51(11):3415-3418

The flavor of the Miyabi variety of Japanese muskmelon was extracted according to the Porapak Q column method (PQM) and evaluated by using aroma extract dilution analysis (AEDA) method. The overall odor of the PQM extracts was perceived as having a natural muskmelon-like odor, suggesting that the PQM was able to extract volatile compounds in muskmelon fruit without degradation of original flavor. Forty-six odorant compounds [Kovats index (KI), 961 < or = KI < or = 2605] were found by GC-sniffing in PQM extracts, confirming the effectiveness of PQM in trapping a wide range of volatile compounds in muskmelon flavor. The 46 odorants could be divided into three groups on the basis of their odor attributes: fruity note (KI < 1300); green, grassy, or cucumber-like note (1300 < KI < 2020); and sweet note (KI > 2020). When the original extracts were diluted in AEDA analysis, seven odorants could still be detected by GC-sniffing at a flavor diluation (FD) factor of 128 or above: one had a fruity note (compound 3); four had a cucumber-like, green, or grassy note (compounds 12, 17, 21, and 23); and two had a sweet note (caramel-like or yakitori-like) (compounds 32 and 34).  相似文献   

Fine fractionation and purification of the fulvic acid fraction using adsorption and precipitation procedures     

Syuntaro HIRADATE  Takuya YONEZAWA  Hiroshi TAKESAKO 《Soil Science and Plant Nutrition》2007,53(4):413-419

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Formaldehyde adsorption by karamatsu (Larix leptolepis) bark     

Toshiyuki Takano  Tomomi Murakami  Hiroshi Kamitakahara  Fumiaki Nakatsubo 《Journal of Wood Science》2008,54(4):332-336

Formaldehyde adsorption and release tests of karamatsu (Larix leptolepis) bark and bark ingredients were performed. Karamatsu bark had good formaldehyde adsorption ability that was better than microcrystalline cellulose. An acetone-soluble fraction from karamatsu bark, which might contain bark tannin, had excellent formaldehyde adsorption ability, and was found to release a trace amount of the adsorbed formaldehyde, suggesting that its formaldehyde adsorption was predominantly due to chemical adsorption. It was confi rmed that the acetone-soluble fraction played an important part in formaldehyde adsorption by karamatsu bark. An acetone-insoluble fraction from karamatsu bark had good formaldehyde adsorption ability as well as the bark, in spite of the residue after the removal of the acetone-soluble fraction.  相似文献   

Azide ion as a quinone methide scavenger in the horseradish peroxidasecatalyzed polymerization of sinapyl alcohol     

Yuki Tobimatsu  Toshiyuki Takano  Hiroshi Kamitakahara  Fumiaki Nakatsubo 《Journal of Wood Science》2008,54(1):87-89

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Mechanism of formaldehyde adsorption of (+)-catechin   总被引：1，自引：1，他引：0  

Toshiyuki Takano  Tomomi Murakami  Hiroshi Kamitakahara  Fumiaki Nakatsubo 《Journal of Wood Science》2008,54(4):329-331

The reaction of (+)-catechin with formaldehyde vapor was investigated as a model reaction of formaldehyde adsorption of (+)-catechin. It was found by H nuclear magnetic resonance spectroscopy, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, and gel permeation chromatography of the product that the vapor reaction of (+)-catechin with formaldehyde without a solvent or a catalyst proceeds via methylolation, condensation, and polymerization. This is the same as the reaction in a solvent in the presence of an acid or a base. The formation of polyoxymethylenes such as paraformaldehyde was not confirmed.  相似文献   

Research progress in rice gametophyte genes Chinese Rice Research Newsletter     

LU Chuangen  ZOUJiangshi  Hiroshi IKEHASHI 《水稻科学》2000,8(4):14

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Carbamate-induced flowering in asparagus (Asparagus officinalis L.) seedlings: optimization of treatment and cultivar variation in flowering response and pollen germination     

Yukio Ozaki  Tomoko Kurahashi  Tomoko Tashiro  Hiroshi Okubo 《Euphytica》1999,110(2):77-83

Optimal carbamate treatment conditions were studied for flower induction in seedlings of an asparagus cultivar ‘Mary Washington 500 W’. Flower induction was most accelerated by soaking seeds in 50 mg l⁻¹ carbamate solution for 12 days at 25 ^°C under the fluorescent light. Longer exposure to carbamate over a 12 day period induced a higher percentage of seedlings to flower. A higher percentage of flowering seedlings were male. Flower induction frequency among seven cultivars through carbamate treatment widely ranged from 13 to 67%. ‘Geynlim’, ‘Mary Washington 500 W’ and ‘Welcome’ exhibited a high percentage of flowering seedlings, while ‘Larac’ and ‘Vulkan’ showed low values. Only male flowers were induced in all-male cultivars. Variation in pollen germination was found within all cultivars. ‘Geynlim’, ‘Cito’ and ‘Mary Washington 500 W’ showed high values of average pollen germination. Application of carbamate compound to induce flower production can rapidly produce homogenic cultivars which include both sexes. This is necessary for genetic studies and breeding purposes. This revised version was published online in August 2006 with corrections to the Cover Date.  相似文献   

Performance of small harvester head in a thinning operation     

Masahiro Iwaoka  Kazuhiro Aruga  Rin Sakurai  Koo Hyun Cho  Hideo Sakai  Hiroshi Kobayashi 《Journal of Forest Research》1999,4(3):195-200

Medium to large size harvester heads mounted on large machines are popular in Japan. These machines encounter some problems during thinning operations,e.g. damage to residual stand and the compaction of soil. The performance of these large harvesters was compared with that of smaller ones operating simultaneously in the same line thinning operation of the same stand. The results of a time study showed that mean cycle times for the smaller and larger harvesters were not significantly different. This means that the work efficiency of the smaller harvester can be at the same level as the larger harvester on sites similar to those of this study. The mean values “Feed” element of the cycle time, however, were significantly different. Although this time difference appears to provide an advantage to the larger harvester, simulation results show that the advantage is not great enough to significantly shorten the total cycle times. That is to say, the work efficiency remains essentially the same even if the feeding performance of the small size harvester becomes as high as that of larger ones. The small harvester performs adequately in thinning operations, and is not inferior to the larger ones. This result indicates that there is economic potential for small base machines that can be mounted with small harvester heads, resulting in less damage to residual trees and site soils during thinning operation. A part of this paper was orally presented at the 109th Annual Meeting of the Japanese Forestry Society (1998). The time study research presented in this paper was supported by the National Federation of Logging Contractors Cooperative Associations.  相似文献