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1.
陆步诗  李新社  王放银  张飞 《酿酒》2007,34(2):41-43
用丢糟代替部分豆粕改良酱油种曲培养基,通过试验确定丢糟的最佳添加量为25%,培养时间为72h,所制得的种曲孢子数为2.7×1012个/g,蛋白酶活力为1104.2u.  相似文献   

2.
用丢糟代替部分豆粕改良酱油种曲培养基,通过试验确定丢糟的最佳添加量为25%,曲盘厚度3cm,培养时间为72h,所制得的种曲孢子数为2.7×1012个/g,蛋白酶活力为1104.2u.  相似文献   

3.
通过对添加曲酒丢糟生产酱油大曲的效果研究,并对影响成曲质量和酱油品质的工艺条件(培曲时间、温度)进行了探讨。比较了改良曲与传统曲的性能优势及所产酱油的质量指标差异,确定了丢糟的最佳加入量为10%,培曲的时间24h,最适温度33℃。  相似文献   

4.
为优化机压包包曲中丢糟适宜的添加量,在其他条件不变的情况下,采用含丢糟质量分数0、5%、7%、9%、11%机压包包曲与纯小麦机压包包曲进行制曲对比实验。结果表明:丢糟添加量对机压包包曲培养过程中水分、酸度、糖化力、发酵力和主要微生物类群均有不同程度的影响,对新曲的感官品质也有一定的影响;适宜的丢糟添加量有利于改善大曲品质,其中含丢糟质量分数9%的机压包包曲品质最优。因此,在机压包包曲中添加丢糟是可行的。  相似文献   

5.
大曲丢糟代替米糠生产小曲的效果研究   总被引:6,自引:0,他引:6  
李新社  陆步诗 《酿酒》2006,33(4):65-66
通过对曲酒丢糟代替米糠生产小曲的效果研究,并对影响小曲出酒率和品质的工艺条件(培曲时间、温度)作了深入的探讨。确定了丢糟的最佳加入量为10%;培曲的时间是5d,温度是26℃。  相似文献   

6.
丢糟是酿酒生产的副产物,除舍有8%~12%的残淀、60%以上的水分和一定量的糠壳外,还含有一定量的酸、酯、醇、醛等有机物质,有利于微生物的生长.用丢糟代替部分小麦生产大曲试验结果表明,丢糟曲的糖化力、液化力比大曲高,丢糟曲感官和理化指标表明其质量均达到一级曲的质量标准.用丢糟制曲有利于对于筛选、驯良微生物菌种,防止杂菌侵入,提高了曲的酶活力,降低制曲生产成本.(孙悟)  相似文献   

7.
以不同梯度丢糟、小麦及豌豆为原料制作丢糟曲,跟进10%丢糟曲、15%丢糟曲、20%丢糟曲和常规曲发酵过程中糟醅水分、酒精度、酸度和淀粉的变化,并对其酒体产量、理化和感官进行比对分析。研究结果表明,15%丢糟曲应用效果较佳,相比于常规曲,其发酵酒醅顶温、水分、酒精度和淀粉消耗提高了2.9℃、1.7%、0.6%vol和1.36%,酒体产量和己酸乙酯分别提升了2.9%和1.34倍,乳己比降低了0.16,其酒体感官得分最高,窖香更好。该研究为浓香型大曲使用原料的革新提供了理论依据和参考。  相似文献   

8.
探讨机压丢糟包包曲的酿酒效果,采用含丢糟质量分数5%、7%、9% 和11% 的机压包包曲与纯小麦机压包包曲进行酿酒对比实验。结果表明:1)机压丢糟包包曲有利于提高糖化、发酵的程度,能提高浓香型大曲酒的出酒率;2)含丢糟质量分数9% 的机压包包曲酿酒效果最优,不仅能显著提高产酒量,而且能在一定程度上提高酒品质。因此,机压丢糟包包曲用于酿酒生产是可行的。  相似文献   

9.
浓香型大曲酒丢糟用于制曲的研究进展   总被引:2,自引:0,他引:2  
介绍了浓香型大曲酒丢糟的性质,并就浓香型大曲酒丢糟制曲过程中,丢糟的加入方式、加入量以及制曲坯方式的研究进展进行了概述。  相似文献   

10.
王君高 《中国酿造》2000,(6):29-29,34
以酸制酸技术在酒业生产中有着广泛的应用,并有着悠久的历史,运用这一技术进行添加丢糟生产大曲,实践证明是十分有益的,既提高了制曲质量,又节约了制曲原料。  相似文献   

11.
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.  相似文献   

12.
An internet website (http://cpf.jrc.it/smt/) has been produced as a means of dissemination of methods of analysis and supporting spectroscopic information on monomers and additives used for food contact materials (principally packaging). The site which is aimed primarily at assisting food control laboratories in the European Union contains analytical information on monomers, starting substances and additives used in the manufacture of plastics materials. A searchable index is provided giving PM and CAS numbers for each of 255 substances. For each substance a data sheet gives regulatory information, chemical structures, physico-chemical information and background information on the use of the substance in particular plastics, and the food packaging applications. For monomers and starting substances (155 compounds) the infra-red and mass spectra are provided, and for additives (100 compounds); additionally proton NMR are available for about 50% of the entries. Where analytical methods have been developed for determining these substances as residual amounts in plastics or as trace amounts in food simulants these methods are also on the website. All information is provided in portable document file (PDF) format which means that high quality copies can be readily printed, using freely available Adobe Acrobat Reader software. The website will in future be maintained and up-dated by the European Commission's Joint Research Centre (JRC) as new substances are authorized for use by the European Commission (DG-ENTR formerly DGIII). Where analytical laboratories (food control or other) require reference substances these can be obtained free-ofcharge from a reference collection housed at the JRC and maintained in conjunction with this website compendium.  相似文献   

13.
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.  相似文献   

14.
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.  相似文献   

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17.
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.  相似文献   

18.
Capillary electrophoresis (CE) and polarized light microscopy (PLM) were utilized in the detection of the adulteration of locust bean gum with guar gum. For CE analyses, standards of locust bean and guar gums were extracted with 30% CH3CN, removing the residual proteins from the gum matrix. A 8.75 mM NaH2PO4-20.6 mM Na2B4O7 buffer, pH 9, was used to separate these proteins and to identify marker proteins that were present in the guar gum. These markers did not co-migrate with components in the extracts of mechanically processed locust bean gum, and are used as indicators of adulteration. Using PLM with toluidine blue and iodine staining techniques, unadulterated locust bean gum samples were distinguished from mixed samples through the differential staining of components in locust bean versus guar and tara gums. These experiments in the use of CE and PLM provide orthogonal and complementary methods for the verification of 'true' positives and the elimination of 'false' positives.  相似文献   

19.
<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  相似文献   

20.
《印刷工业》2014,(11):95-95
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%.  相似文献   

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