风味胭脂萝卜干的研制

以新鲜胭脂萝卜为原料,结合泡菜和成菜的加工方法,用辣椒、生姜、大蒜等进行调味,研究出了胭脂萝卜干的最佳生产工艺参数及最佳调味料配方。实验结果表明,最佳发酵工艺参数为：胭脂萝卜的添加量50％、食盐的添加量8％、泡菜原汁的添加量20％,在此条件下发酵的胭脂萝卜的感官评分为93分;最佳干燥工艺参数为：干燥温度60℃,干燥时间3h,鼓风,在此条件下干燥的胭脂萝卜的感官评分为93分;调味料最优配方中辣椒、生姜、大蒜、八角茴香粉、芝麻、花椒、白砂糖最优添加量分别为0．65％、0．03％、0．09％、0．03％、0．10％、0．05％、0．03％,在该条件下制备的胭脂萝卜干的感官评分为95分。研制的胭脂萝卜干呈玫瑰红色,具有胭脂萝卜干特有的香气,口感脆嫩,味道可口。     

乳酸菌Lact.1、Lact.2和Lact.3在发酵碎鲜辣椒中的应用研究

Lact.1、Lact.2和Lact.3是从自然发酵辣椒中选育出的具有广谱、高效抑菌活性和良好发酵性能的三株乳酸菌.用它们对辣椒进行发酵实验,通过正交试验得出:三株乳酸菌用于辣椒发酵时的最佳接种量分别为1%、1%、0.5%,食盐的最佳添加量为10%.测定自然发酵辣椒与接种发酵辣椒的发酵周期和亚硝酸盐的含量,结果表明:自然发酵碎鲜辣椒的发酵周期明显长于接种发酵碎鲜辣椒,亚硝酸盐含量明显高于接种发酵碎鲜辣椒.     

碎鲜辣椒发酵制品发酵用乳酸菌的选育与接种发酵试验

本试验选育了两株碎鲜辣椒发酵制品接种发酵用乳酸菌(Lact．chili．6和Lact．chili．8)，经接种与低盐发酵实验证明：Lact．chili．6和Lact．chili．8产酸速度快，抑制杂菌能力强，产品中亚硝酸盐含量低，发酵后期产品酸度稳定，低食盐含量(10％以下)发酵产品的保藏期能显著延长。     

猪肝醡的研制及质量控制

猪肝醡是云南名特畜产品,目前对它的研究为空白。在实验中对猪肝醡的配方、加工工艺和产品的质量进行研究。将传统猪肝醡的盐含量降低到5%～8%、辣椒含量降至6%,同时添加多种辅料,将不影响产品的原有风味;在加工过程中接入2%混合发酵剂,产品发酵成熟时间大大缩短,发酵7 d后产品基本具有了猪肝醡的特有色泽、香味,但到了发酵后期,产品的风味发生了改变,具有酸香味,必须适量添加,添加量过高则不易控制发酵速度,影响产品的质量、风味;猪肝醡的质量可靠、安全。成品中的p H值是3.3～4.8,乳酸菌的菌落总数是4.4×10~6～1.01×10~8个/g。猪肝醡中最佳的食盐添加量为6%～7%,辣椒含量6%,可添加多种辅料;添加1%～1.5%混合发酵剂的可缩短发酵成熟时间;猪肝醡的质量可靠、安全。     

一种糟辣椒产品工艺的优化研究

以鲜红辣椒为原料,研究糟辣椒产品的配方。根据食品的感官属性（色、香、味、形）设计糟辣椒感官评价标准,以感官评分和总酸为评价指标,在单因素试验的基础上,通过正交试验优化糟辣椒产品的工艺和配方。结果表明,风味良好脆鲜糟辣椒的适宜发酵条件为添加5.5%乳酸菌制剂、6%食盐、发酵温度32℃、发酵时间6 d。70℃水浴灭菌20 min能达到GB 2714—2015《食品安全国家标准酱腌菜》标准要求和保持良好的风味。     

发酵乳清橘汁饮料的研制

以乳清粉为原料,经过蛋白澄清后添加干酪乳杆菌进行发酵.先在单因素实验基础上,以DPPH自由基清除率为指标,通过正交试验获取发酵乳清的最佳工艺参数;然后加入稳定剂和调味料制备具有抗氧化性的饮料,并通过正交试验优化制备抗氧化乳清发酵饮料的工艺配方.结果表明最佳工艺配方为:干酪乳杆菌浓度4％、乳清底物浓度10％、发酵温度为41℃、发酵时间8h、黄原胶0.3％、橘汁添加量4％、蔗糖添加量6％;最后制得的产品色泽乳黄、酸香浓郁,综合得分为82.6,DPPH自由基清除率为47.86％.     

辣椒系列加工技术

辣椒是广大消费者喜爱的调味蔬菜,食用非常普遍,有良好的开胃作用,但鲜辣椒是季节产品,不易保存,容易腐烂变质而不能食用。介绍了12种辣椒系列产品,达到季节收购,常年贮存的目的。此12种辣椒系列产品分别为：红辣椒酱、腌青辣椒、腌红辣椒、豆瓣辣酱、辣椒芝麻酱、酸辣椒、五香辣椒、辣椒糊、泡甜椒、酱红辣椒和辣椒粉。其加工方法大致可分为2类,一类为鲜辣椒干燥、脱水,达到使微生物无法繁殖的目的;另一类是通过添加各种调味料来达到杀菌、防腐和调味的目的。     

辣椒系列加工技术

辣椒是广大消费者喜爱的调味蔬菜,食用非常普遍,有良好的开胃作用,但鲜辣椒是季节产品,不易保存,容易腐烂变质而不能食用。介绍了12种辣椒系列产品,达到季节收购,常年贮存的目的。此12种辣椒系列产品分别为：红辣椒酱、腌青辣椒、腌红辣椒、豆瓣辣酱、辣椒芝麻酱、酸辣椒、五香辣椒、辣椒糊、泡甜椒、酱红辣椒和辣椒粉。其加工方法大致可分为2类,一类为鲜辣椒干燥、脱水,达到使微生物无法繁殖的目的;另一类是通过添加各种调味料来达到杀菌、防腐和调味的目的。     

鱼肉调理制品配方优化及贮藏品质研究

目的开发草鱼调理制品最佳麻辣配方并研究其贮藏品质。方法以草鱼为主要原料,感官评价为主要判别依据,通过单因素和正交试验优化原味配方(料酒、姜粉、食盐、味精和白砂糖)的添加量,再利用单因素和正交试验优化麻辣调味料(花椒、辣椒和胡椒)的添加量,最后对产品在–18℃条件下的贮藏品质变化情况进行研究。结果产品最佳原味配方为料酒1.6%,姜粉0.2%,食盐1.5%,味精1.0%,白砂糖2.0%; 3种麻辣调味料的最适添加量为花椒0.3%,辣椒0.4%,胡椒0.3%;鱼肉调理制品在–18℃冻藏条件下品质保持良好,货架期至少可保持2个月,添加聚赖氨酸后产品的品质得到了更好地保持。结论本配方鱼肉调理制品麻辣鲜香且货架期长,为鱼肉调理制品的开发和贮藏保鲜提供了参考。     

鲊鱼制品固态发酵工艺条件的优化

为实现我国传统发酵鱼制品鲊鱼的工业化生产,采用固态发酵方法,研究了米粉添加量、食盐添加量、发酵温度和发酵时间对自然发酵鲊鱼品质的影响,并采用正交实验对发酵工艺进行了优化。结果表明,米粉添加量、食盐添加量、发酵温度和发酵时间对鲊鱼品质存在显著影响,将鱼肉100g、米粉45g、食盐2.0g、配以适量的水、生姜、辣椒等辅料,混合均匀后,装入玻璃瓶,压实并密封后,于25℃的温度下发酵60h,可获得总酸度为1.01%,水溶性固形物含量4.60%,水溶性蛋白质含量28.40mg/g,游离氨基酸含量2.62mg/g,发酵风味浓郁、酸香可口的鲊鱼制品。     

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.