2009年嘉兴市食源性病原菌监测分析

目的监测2009年嘉兴市食品中致病菌污染状况。方法共采集275份生熟食品样品,分离沙门菌、单核细胞增生李斯特菌、大肠杆菌O157:H7、金黄色葡萄球菌和副溶血性弧菌。结果 75份生肉、水产品食源性病原菌总污染率45.3%,其中检出沙门菌6株,单核细胞增生李斯特菌12株,金黄色葡萄球菌4株,副溶血性弧菌18株。未检出大肠杆菌O157:H7。200份即食食品总污染率3.0%,以金黄色葡萄球菌污染为主。结论 2009年嘉兴市主要污染食品品种是冷藏冷冻生肉,污染的食源性致病菌以单核细胞增生李斯特菌和副溶血性弧菌为主。     

汕头市2005—2007年食源性致病菌监测

目的了解汕头市2005—2007年食品中沙门菌、单核细胞增生性李斯特菌、肠出血性大肠杆菌（O157：H7）、副溶血性弧菌的污染情况。方法按“《广东省食源性致病菌监测计划》检测技术要求”的检验方法进行。结果在采集的237份食品样品中，共检出5份沙门菌、8份单核细胞增生性李斯特菌和13份副溶血性弧菌，检出率分别为2．50％、3．38％和32．50％。未检出肠出血性大肠杆菌（O157：H7）。以水产品和生肉食品食源性致病菌污染最为严重。结论应加强水产品和生肉食品食源性致病菌污染的监测。     

广东省江门市区2004-2008年食源性致病菌的监测

目的了解江门市区2004-2008年食品中沙门菌、金黄色葡萄球菌、单核细胞增生李斯特菌、副溶血性弧菌及肠出血性大肠肝菌(EHEC)O157∶H7的污染状况,确定上述致病菌可能污染的高危食品,为食源性疾病监测提供科学依据。方法依据国标方法,并按《广东省食源性致病菌监测计划》检测技术要求,对采集的食品样本分别进行沙门菌、金黄色葡萄球菌、单核细胞增生李斯特菌、副溶血性弧菌及EHECO157∶H7分离、生化及血清学鉴定。结果从9类626份食品中,5年共检出致病菌54株,总检出率为8.63%。其中金黄色葡萄球菌3年检出14株,检出率最高为4.83%;其次为沙门菌5年检出23株,检出率为3.67%;单核细胞增生李斯特菌5年检出16株,检出率为2.56%;副溶血性弧菌5年中仅检出1株,检出率为0.16%;未检出EHECO157∶H7。以非定型包装熟肉、生肉类污染较为严重。结论应加强非定型包装熟肉和生肉类食品食源性致病菌污染的监测。     

2004-2007年肇庆市食品中食源性致病菌监测与分析

目的了解肇庆市食品中食源性致病菌的污染状况和污染水平,初步确定高危食品的种类,为食源性疾病的监测提供科学的依据。方法按全国食品污染物监测网的工作手册,2004-2007年采集4个监测点的5大类食品(生肉、熟肉、水产品、生吃水产品和生吃蔬菜)共计325份,对沙门菌、单核细胞增生李斯特菌、大肠杆菌O157∶H7和副溶血性弧菌4种食源性致病菌进行监测分析。结果325份食品样品中,检出致病菌27株(8.31%)。其中沙门菌16株(4.92%),单核细胞增生李斯特菌10株(3.08%),大肠杆菌O157∶H7未检出,80份水产品中检出副溶血性弧菌1株(1.25%)。生肉的污染情况最为严重,检出率为11.35%,其次是熟肉,检出率为9.68%;水产品的检出率为5.45%,生食水产品的检出率为4.00%,生食蔬菜的检出率为2.56%。结论沙门菌和单核细胞增生李斯特菌对肇庆市食品的污染普遍存在。生肉、熟肉的污染尤为严重,是重要的高危食品。     

扬州市食品中7种食源性致病菌污染状况及耐药性研究

为确定易受污染的食品,研究食源性病原菌耐药性状,为制定HACCP控制食源性疾病提供科学依据,对扬州市食品中沙门菌、E.coliO157:H7、单核细胞增生李斯特菌、金黄色葡萄球菌、副溶血性弧菌、空肠弯曲菌和小肠结肠炎耶尔森菌污染状况进行分析。在957份食品中共检出沙门菌、单核细胞增生李斯特菌、金黄色葡萄球菌、副溶血性弧菌90株,检出率为9.40%。其中沙门菌检出率为2.09%,单核细胞增生李斯特菌检出率为4.49%,金黄色葡萄球菌检出率为2.72%,副溶血性弧菌检出率为0.10%,未检出E.coliO157:H7。在80件生肉类试样中检出空肠弯曲菌8株,小肠结肠炎耶尔森菌6株。对分离出的沙门菌、单核细胞增生李斯特菌、金黄色葡萄球菌进行药敏试验,结果表明3种致病菌对部分抗生素多重耐药。扬州市食品中主要危害因素为沙门菌、单核细胞增生李斯特菌、金黄色葡萄球菌及其对抗生素的多重耐药。食物链是病原菌耐药性产生的重要环节。加强生肉制品、散装熟食及生牛奶的卫生管理,控制动物饲料抗生素添加剂的使用并严格遵守休药期以防止耐药菌株的产生,对控制食源性疾病、保证食品安全具有很重要的意义。     

2007年江苏省食源性致病菌监测分析

目的监测江苏省主要食源性致病菌污染状况,确定本地区高危食品,为预防控制食源性疾病提供科学依据。方法依据GB/T 4789—2003食品卫生微生物学检验方法,对样品分别进行沙门菌、单核细胞增生性李斯特菌、大肠杆菌O157∶H7、空肠弯曲菌和副溶血性弧菌进行分离,生化及血清学鉴定。结果共监测生畜禽肉、熟肉制品、生食蔬菜、水产品8类样品共804件,检出致病菌113株,总检出率14.1%(113/804)。其中沙门菌检出33株,检出率为4.1%(33/804),单核细胞增生性李斯特菌检出41株,检出率5.6%(41/738);副溶血性弧菌检出13株,检出率为11.2%(13/116);金黄色葡萄球菌检出率15.9%(24/151);大肠杆菌O157∶H7检出2株,检出率0.41%(2/493);空肠弯曲菌和阪崎肠杆菌未检出。33株沙门菌经血清型鉴定,分离出9种血清型,主要是德尔卑沙门菌,其次为罗米他沙门菌和鸭沙门菌。结论江苏省地区食品存在食源性致病菌污染,其中水产品和生肉是主要污染食品品种,而熟肉和生食水产品导致食源性疾病的风险较高。     

农产品中食源性致病菌的污染状况分析

目的了解农产品中食源性致病菌的污染状况,为政府监管提供依据。方法共抽取430份农产品样品,监测项目为沙门氏菌、单核细胞增生李斯特氏菌、金黄色葡萄球菌、大肠埃希氏菌O157:H7、霍乱弧菌、志贺氏菌、副溶血性弧菌和诺如病毒。采用全自动基因指纹分析仪对分离到的部分沙门氏菌和金黄色葡萄球菌株进行核糖体基因指纹鉴定。结果农产品中存在食源性致病菌的污染,畜禽产品中检出单核细胞增生李斯特氏菌22株、沙门氏菌17株、金黄色葡萄球菌7株;水产品中检出霍乱弧菌7株;鲜食蔬菜中检出金黄色葡萄球菌11株,72%的金黄色葡萄球菌产肠毒素。全自动基因指纹分析仪的鉴定结果和国标方法完全一致。结论应重视农产品的源头污染,加强监控。全自动基因指纹分析仪可用于食源性致病菌的快速鉴定和溯源。     

2006年东阳市食品致病菌污染状况监测分析

目的对东阳市食品中6种致病菌的分布状况进行监测，确定污染致病菌的高危食品，为食物中毒监测提供科学依据。方法依据国标方法和2006年中国疾病预防控制中心食品污染菌调查工作手册，采用进口显色培养基、生物梅里埃-ATB鉴定系统，对采集的食品样本分别进行沙门菌、单核细胞增生性李斯特菌、EHEC O157：H7、弯曲菌、金黄色葡萄球菌和副溶血性弧菌的分离和生化鉴定。结果检测生肉（牛、羊、鸡、猪）、熟肉、非生食水产品、生食水产品、生食蔬菜、蔬菜色拉、鲜榨果汁共7类样品143份，检出致病菌38株（其中有2份生猪肉同时检出2株沙门菌），总检出率25.2％。其中分离到副溶血性弧菌6株，金黄色葡萄球菌12株，沙门菌17株，单核细胞增生性李斯特菌3株。EHEC O157：H7和弯曲菌未栓出。7类食品中致病菌阳性率最高的为非生食水产品（70．0％），其次为蔬菜色拉（50.0%）、生肉（39.5％）、熟肉制品（15．2％），生食蔬菜和生食水产品中均未检出致病菌。结论东阳市居民主要消费食品存在食源性致病菌污染，其中非生食水产品和生肉是主要被污染食品。主要污染致病菌是副溶血性孤菌、金黄色葡萄球菌和沙门菌。     

六类食品中致病性细菌检测

为了解昌平区细菌对食品污染的特点，2004年采集6类305件食品，按照GB／T4789－2003食品微生物检验标准进行沙门菌、金黄色葡萄球菌、副溶血性弧菌、单核细胞增生性李斯特菌、0157：H7大肠杆菌5种致病菌检测。菌株鉴定应用API细菌鉴定系统，肠毒素检测用minVIDAS测试系统，单核细胞增生性李斯特菌毒力基因测定采用聚合酶链反应（PCR）。金黄色葡萄球菌检出率为16．07％，其中生肉、生牛奶、生食水产品检出率比较高，分别为25％、16．98％、27．27％；散装熟肉制品、乳制品也有检出，分别为4.29％、5％。在检出的49株金黄色葡萄球菌菌株中有31株产生肠毒素，占63．26％，其中生、熟肉类肠毒素阳性25株；从奶类、生食水产品中各检出3株。单核细胞增生性李斯特菌检出34株，检出率为11．15％，其中生肉检出率高达20％，其次为散装熟肉制品（8．57％）；另外从淡水鱼中检出4株单核细胞增生性李斯特菌。28株单核细胞增生性李斯特菌毒力基因（hly、iap、prfA）检测全部阳性。生肉中检出一株肠炎沙门菌。未检出O157：H7大肠杆菌、副溶血性弧菌。昌平地区金黄色葡萄球菌和单核细胞增生李斯特菌对食物的污染比较严重，生食品与加工后食品的检出率差异有显著性。     

徐州市2007-2011年食品中食源性致病菌监测结果分析

目的 了解徐州市食品中食源性致病菌污染状况,为食源性疾病监测提供科学依据.方法 依据《全国食源性致病菌监测工作手册》对食源性致病菌进行监测.结果 2007-2011年间共监测630份食品,总检出率为15.08％:检出沙门菌、大肠杆菌O157:H7、单增李斯特菌、副溶血性弧菌、金黄色葡萄球菌;阪崎杆菌、志贺菌、创伤弧菌未检出.生肉类和水产品污染较严重,生肉以单增李斯特菌和沙门菌污染程度高,检出率为分别为18.28％和10.75％;水产品以副溶血性弧菌检出率最高,为23.08％.结论 徐州地区食品中存在食源性致病菌污染,卫生监督部门应加强食品安全管理.     

Reliable identification of grapevine rootstock varieties using RAPD PCR on woody samples

Since grapevine ( Vitis spp .) rootstock material is being traded increasingly as disbudded woody material a lack of distinctive morphological features on such material necessitates an alternative and reliable means of identification. Methods described here were developed for rapid and efficient extraction of DNA from woody samples rich in phenolic compounds and polysaccharides, and for subsequent identification of varieties by RAPD PCR. Using these methods, and with the application of only one selected RAPD primer, we were able to differentiate sixteen rootstock varieties, including the seven varieties most commonly used in Germany. Problems commonly encountered with reproducibility of RAPD patterns were avoided by choosing primers with a dinucleotide sequence and a high G/C content that allowed a rather high annealing temperature of 45°C. Methods described here should also be useful for other horticultural crops, especially those with woody tissues rich in phenolic compounds and polysaccharides.     

Aroma characterization of various apricot varieties using headspace–solid phase microextraction combined with gas chromatography–mass spectrometry and gas chromatography–olfactometry

The characterization of the aromatic profile of several apricot cultivars with molecular tracers in order to obtain objective data concerning the aromatic quality of this fruit was undertaken using headspace–solid phase microextraction (HS–SPME). Six apricot cultivars were selected according to their organoleptic characteristics: Iranien, Orangered, Goldrich, Hargrand, Rouge du Roussillon and A4025. The aromatic intensity of these varieties measured by HS–SPME–Olfactometry were defined and classified according to the presence and the intensity of grassy, fruity and apricot like notes. In the six varieties, 23 common volatile compounds were identified by HS–SPME–GC–MS. Finally, 10 compounds, ethyl acetate, hexyl acetate, limonene, β-cyclocitral, γ-decalactone, 6-methyl-5-hepten-2-one, linalool, β-ionone, menthone and (E)-hexen-2-al were recognized by HS–SPME–GC–O as responsible of the aromatic notes involved in apricot aroma and considered as molecular tracers of apricot aromatic quality which could be utilized to discriminate apricot varieties.     

Tests of potential functional barriers for laminated multilayer food packages. Part I: Low molecular weight permeants

The advent of the functional barrier concept in food packaging has brought with it a requirement for fast tests of permeation through potential barrier materials. In such tests it would be convenient for both foodstuffs and materials below the functional barrier (sub-barrier materials) to be represented by standard simulants. By means of inverse gas chromatography, liquid paraffin spiked with appropriate permeants was considered as a potential simulant of sub-barrier materials based on polypropylene (PP) or similar polyolefins. Experiments were performed to characterize the kinetics of the permeation of low molecular weight model permeants (octene, toluene and isopropanol) from liquid paraffin, through a surrogate potential functional barrier (25 μm-thick oriented PP) into the food simulants olive oil and 3% (w/v) acetic acid. These permeation results were interpreted in terms of three permeation kinetic models regarding the solubility of a particular model permeant in the post-barrier medium (i.e. the food simulant). The results obtained justify the development and evaluation of liquid sub-barrier simulants that would allow flexible yet rigorous testing of new laminated multilayer packaging materials.     

Analysis of benzo[a]pyrene in spiked fatty foods by second derivative synchronous spectrofluorimetry after microwave-assisted treatment of samples

A simple, rapid and inexpensive method has been developed for the determination of benzo[a     

The development of reference materials for paralytic shellfish poisoning toxins in lyophilized mussel. II: Certification study

This paper describes the second part of a project undertaken to develop certified mussel reference materials for paralytic shellfish poisoning toxins. In the first part two interlaboratory studies were undertaken to investigate the performance of the analytical methodology for several PSP toxins, in particular saxitoxin and decarbamoyl-saxitoxin in lyophilized mussels, and to set criteria for the acceptance of results to be applied during the certification exercise. Fifteen laboratories participated in this certification study and were asked to measure saxitoxin and decarbamoyl-saxitoxin in rehydrated lyophilized mussel material and in a saxitoxin-enriched mussel material. The participants were allowed to use a method of their choice but with an extraction procedure to be strictly followed. The study included extra experiments to verify the detection limits for both saxitoxin and decarbamoyl-saxitoxin. Most participants (13 of 15) were able to meet all the criteria set for the certification study. Results for saxitoxin.2HCl yielded a certified mass fraction of <0.07 mg/kg in the rehydrated lyophilized mussels. Results obtained for decarbamoyl-saxitoxin.2HCl yielded a certified mass fraction of 1.59+/-0.20 mg/kg. The results for saxitoxin.2HCl in enriched blank mussel yielded a certified mass fraction of 0.48 +/- 0.06 mg/kg. These certified reference materials for paralytic shellfish poisoning toxins in lyophilized mussel material are the first available for laboratories to test their method for accuracy and performance.     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of the     

Chinese CTP Market

According to Printing and Printing Equipment Industries Association of China（PEIAC）＇s statistics to the plate manufucturer in China, in 2013, the actual offset plate production has reached 346 million square meters in China. Among them, the CTP production volume was 245 million square meters, up by 11% than that of last year; the total sales of the CTP plate was 239 million square meters, up by 13%.     

Qingshan Paper Intended to Increase Raised Fund RMB 1.3 Billion to Build Dissolving Wood Pulp Production Base

On April 25th, 2014, Guangdong Guanhao High -Tech Co., Ltd. held the trial production ceremony of the specialty paper and coated paper industry base project （first phase） at the base paper production plant of Donghai Island m     

Two Bag Manufacturers in China Invested by OJI Group Officially Put into Operation

正In September 2013,OJI(Qingdao)Bag Manufacture Co.Ltd.and Wuhan South OJI Packing Co.Ltd.invested by OJI Group in China have put into operation in succession,and the opening ceremony was held on September 4th and 5th respectively.