广西酱卤肉制品中合成色素残留水平初步分析

探讨广西不同地市盐焗鸡等酱卤肉制品中合成色素(柠檬黄、苋菜红、胭脂红、日落黄、诱惑红、亮蓝)的残留水平。结果表明:广西810份酱卤肉制品中合成色素检出率为13.58%,其中超市检出率约为9.71%,农贸菜市约为29.19%;在检出样品中,盐焗类产品检出率最高(37.27%);检测出的色素中,柠檬黄检出率最高(69.09%),残留范围1.24 mg/kg~85.61 mg/kg。     

高效液相色谱法同时测定肉制品中10种水溶性合成色素

建立了一种高效液相色谱法同时检测肉制品中日落黄、柠檬黄、苋菜红、胭脂红、诱惑红、新红、酸性红、赤藓红、靛蓝、亮蓝等10种水溶性合成色素的分析方法。样品经提取净化后注入高效液相色谱仪,根据保留时间定性,外标峰面积法定量。     

全自动固相萃取-液相色谱法测定肉制品中的合成色素

建立了一种快速、高效、准确的测定肉制品中柠檬黄、苋菜红、胭脂红、日落黄、诱惑红5种合成色素的全自动固相萃取-高效液相色谱(SPE-RP-HPLC)方法。方法:样品采用固相萃取小柱进行净化、富集,在C18柱色谱柱上以甲醇-乙酸铵水溶液(20.0mmol/L)为流动相实现基线分离,紫外检测。结果:5种合成色素的加标回收率为88.4%~96.0%,精密度为1.8%~3.1%。结论:本法可用于肉制品中柠檬黄、苋菜红、胭脂红、日落黄、诱惑红5种合成色素的测定。     

高胶质食品中合成色素检测方法的改进

采用用聚酰胺吸附法、碱液直接提取法、碱性醇液提取法、饱和硼砂沸腾水浴提取法、海砂研磨法5种提取方法分别提取凤爪中的柠檬黄、苋菜红、胭脂红、日落黄、诱惑红和亮蓝6种色素,并用超高效液相色谱法测定。结果表明:5种提取方法中,海砂研磨法对凤爪中6种色素的提取效率最高;用选定的方法对超市中抽检的25个凤爪样品进行检测,发现样品中主要含有柠檬黄、日落黄和诱惑红,含少量胭脂红,不含苋菜红和亮蓝。     

2012~2015年贵州省餐饮食品中色素检测结果分析

目的 对贵州省餐饮服务食品中柠檬黄、诱惑红、日落黄、胭脂红和苏丹红5种色素进行检测与分析, 掌握我省餐饮食品安全状况。方法 根据GB/T 5009.35-2003《食品中合成着色剂的测定》, SNT 1743-2006《食品中诱惑红、酸性红、亮蓝、日落黄的含量检测 高效液相色谱法》和GB/T 19681-2005《食品中苏丹红染料的检测方法 高效液相色谱法》, 对2012~2015年贵州省餐饮服务食品中5种色素进行检测, 按GB/2760-2011《食品添加剂使用卫生标准》和《食品中可能违法添加非食用物质名单》判断是否合格。结果 3054批食品中, 柠檬黄、诱惑红、日落黄、胭脂红和苏丹红的合格率分别为95.6%、99.1%、98.5%、99.3%和100%。结论 贵州省4年内餐饮服务食品中色素的总体安全状况较好。     

高效液相色谱法同时测定饮料中十种食用合成着色剂

建立了一种多波长同时测定饮料中十种食用合成着色剂（柠檬黄,苋菜红,胭脂红,日落黄,诱惑红,亮绿SF,监牢绿,亮蓝,酸性橙,碱性嫩黄O）的高效液相色谱法。样品在酸性条件下于60℃水浴聚酰胺粉吸附30min,碱性条件下无水乙醇-氨水-水（体积比为70：1：29）解吸,采用高效液相色谱法分离,可变波长检测器检测,外标法定量。结果表明,十种合成着色剂在0.1～10.0μg/mL范围内线性关系良好,相关系数为0.9981～0.9998。当添加水平在0.5～10.0μg/mL范围内,样品加标平均回收率在76.6%～108%,日内精密度范围在1.0%～7.5%,日间精密度在2.1%～12.0%。其中柠檬黄,苋菜红,胭脂红,日落黄,诱惑红,监牢绿,亮蓝,碱性嫩黄O的检出限为0.1μg/mL,亮绿和酸性橙为0.2μg/mL。该方法灵敏度高,重现性好,完全满足合成着色剂多残留分析的要求。     

高效液相-多通道可变波长检测法测定鸡尾酒中合成着色剂

采用高效液相-多通道可变波长检测法测定5种口味鸡尾酒中的柠檬黄、苋菜红、胭脂红、日落黄、亮蓝合着色剂。样品经10%氨水调pH 6~7,聚酰胺吸附,乙醇-氨水-水混合液解吸(7∶2∶1,v/v),采用C18色谱柱分离,以甲醇-乙酸铵(0.02 mol/L)为流动相梯度洗脱,二极管阵列检测器检测,柠檬黄、苋菜红、胭脂红、日落黄在254 nm波长下检测;亮蓝在629 nm波长下检测,外标法定量。结果表明:各组分在0~20.0 mg/L范围内线性关系良好,相关系数均大于0.999,方法检出限为柠檬黄:0.74 ng/kg、苋菜红:0.80 ng/kg、胭脂红:0.91 ng/kg、日落黄:1.16 ng/kg、亮蓝:0.43ng/kg;在1、5、10 mg/kg三个加标水平下的平均回收率为80.11%~119.05%,相对标准偏差(RSD)为1.50%~4.94%。该方法操作简单,结果准确可靠,重现性好,避免了单一测量波长下不同色素混标灵敏度高低差异大的问题,适用于鸡尾酒中几种色素的同时检测。     

高效液相色谱法同时测定食品中9种合成着色剂

目的 建立高效液相色谱法(high performance liquid chromatography,HPLC)同时检测食品中9种合成着色剂(柠檬黄、新红、苋菜红、靛蓝、胭脂红、日落黄、诱惑红、亮蓝及酸性红)的分析方法.方法 样品经超声提取、聚酰胺净化、浓缩、定容、过膜,经Shim-pack GIST C18色谱柱(...     

肉制品中人工合成色素的检测方法

借鉴国标中规定的对饮料等类产品的部分处理方法，采用石油醚处理肉制品去油脂，对肉制品中的人工合成色素（胭脂红、苋菜红、柠檬黄、日落黄、诱惑红、亮蓝）同时进行检测，此法不仅减少因油脂堵塞G3漏斗而影响抽滤时间，也减少了色素的损失，得到较为满意的结果。     

HPLC-DAD法测定粗粮馒头中6种合成色素

建立一种简便、快速、重复性好的高效液相色谱-二极管阵列检测器测定粗粮馒头中的柠檬黄、苋菜红、 胭脂红、诱惑红、日落黄、亮蓝6 种合成色素的含量。选用无水乙醇-氨水-水（7∶2∶1,V/V）为样品的提取溶剂, 色谱柱为Waters Symmetry® C18柱（250 mm×4.6 mm,5 μm）,流速1.0 mL/min,柱温35 ℃,多波长同时测定6 种 的合成色素,检测波长分别为425、483、520、620 nm。流动相以甲醇为A相,以含0.02 mol/L乙酸铵、1%冰醋酸 和0.2%三乙胺溶液（pH 4）为B相,进行梯度洗脱。结果表明：6 种合成色素均达到基线分离,具有良好的线性关 系（r=0.999 9）;样品的柠檬黄、苋菜红、胭脂红、诱惑红、日落黄、亮蓝加标回收率分别为97.94%、96.40%、 96.28%、97.63%、98.80%、100.40%,相对标准偏差均小于2.0%。该方法可用于甄别是否由染色而成的粗粮馒头     

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%.     

Preparatory Work of Print China 2015 is Going Smoothly

正Held at Guangdong Modern International Exhibition Center,Print China 2015 will cover 7exhibition halls,besides the original Hall No.3,4,5,6,7,the newly built F zone of Hall 3 will be used too.The total area will be140,000 square meters.Hall 3:Offset and large printing equipment,package printing equipment,post press     

INFOPRINT 2014 was Successfully Held in Dongguan

Sponsored by Printing and Printing Equipment Industries Association of China （PEIAC） and organized by Print China magazine, the Seventeenth Beijing International Printing Information Conference （INFOPRINT 2014） was successfully held on 11th Dec. 2014 at Dongguan Exhibition International Hotel.