MljekarstvoPub Date : 2020-01-08DOI: 10.15567/mljekarstvo.2020.0101
Mirela Lučan, Jasmina Lukinac Čačić, M. Jukič, Helena Tomić Obrdalj, Davorka Gajari, L. Primorac, Tanja Cvetković, Vedran Slačanac, Jasmina Ranilović
{"title":"Physico-chemical properties, spreadability and consumer acceptance of low-sodium cream cheese","authors":"Mirela Lučan, Jasmina Lukinac Čačić, M. Jukič, Helena Tomić Obrdalj, Davorka Gajari, L. Primorac, Tanja Cvetković, Vedran Slačanac, Jasmina Ranilović","doi":"10.15567/mljekarstvo.2020.0101","DOIUrl":"https://doi.org/10.15567/mljekarstvo.2020.0101","url":null,"abstract":"The present study was performed to investigate the possibility of sodium reduction in cream cheese by partial reduction and substitution of sodium by potassium based salt. Four salt treatment were selected by preliminary study: 100 % NaCl (control), NaCl reduced to 65 % (T1), 35 % of NaCl substituted by KCl (T2), and KCl-based salt mixture Salut® which contains offflavours masking compound (T3). The study was evaluated physico-chemical attributes, colour, spreadability, sensory acceptance, as well as level of intensity of specific attributes of low-sodium cream cheese. Sodium reduction not influenced on the protein, fat and moisture content, water activity, acidity and the colour of cream cheese (P>0.05). However, sodium reduction significantly influenced to mineral composition, spreadability and sensory properties. The use of potassium salt substitutes significantly increased the value of K:Na ratio. Cheese containing commercial salt replacer Salut® had the closest hedonic score to control cheese compared to other replacers. The current research demonstrates that sodium content can be reduced by 35 % in cream cheese using a nutritionally valuable potassium-based salt mixture, without compromising the consumer acceptance.","PeriodicalId":18635,"journal":{"name":"Mljekarstvo","volume":"70 1","pages":"13-27"},"PeriodicalIF":1.2,"publicationDate":"2020-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.15567/mljekarstvo.2020.0101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44340900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MljekarstvoPub Date : 2020-01-08DOI: 10.15567/mljekarstvo.2020.0105
G. Natrella, M. Faccia, J. Lorenzo, P. Palo, G. Gambacorta
{"title":"Evolution of volatile compounds from milk to curd during manufacturing of Mozzarella","authors":"G. Natrella, M. Faccia, J. Lorenzo, P. Palo, G. Gambacorta","doi":"10.15567/mljekarstvo.2020.0105","DOIUrl":"https://doi.org/10.15567/mljekarstvo.2020.0105","url":null,"abstract":"The aim of this study was to investigate the evolution of the volatile compounds (VOC) from milk to curd during mozzarella manufacturing, in connection with the technique used for curd acidification (traditional = natural whey starter fermentation; industrial = direct acidification by citric acid addition). Overall, 40 compounds were identified from the entire set of samples, belonging to different chemical classes. All compounds detected in milk were also found in the curd, but at much higher concentration. In addition, many other compounds formed during curd production. By comparison of the samples from the 2 acidification techniques, and analysing the scientific literature to explain the source of the volatile compounds, it was found that microbial activity played a main role in VOC formation. In fact, the curd obtained by natural whey starter fermentation showed the most complex profile, whereas that of the curd obtained by direct acidification was much simpler. The most important odour-active compounds that could contribute to flavour of the curd made by traditional technology were 3-methylbutanal, ethyl acetate and 2,3-butanedione, responsible for ethereal, fruity and buttery odour. For direct acidification they were 3-methylbutanal (at lower level), nonanal and decanal (herbal/fruity odour). The PCA analysis showed clear clusterization of the three types of samples: milks and direct acidified curds were rather close in the bi-plot graph, whereas traditional curds were spread all along the space. The research is currently in progress, for assessing the evolution of the volatile compounds during the next technological steps of mozzarella manufacturing.","PeriodicalId":18635,"journal":{"name":"Mljekarstvo","volume":"70 1","pages":"50-58"},"PeriodicalIF":1.2,"publicationDate":"2020-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.15567/mljekarstvo.2020.0105","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44021058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MljekarstvoPub Date : 2020-01-08DOI: 10.15567/mljekarstvo.2020.0106
B. Paszczyk, Joanna Łuczyńska, M. Polak-Śliwińska
{"title":"The effect of storage on the yogurt fatty acid profile","authors":"B. Paszczyk, Joanna Łuczyńska, M. Polak-Śliwińska","doi":"10.15567/mljekarstvo.2020.0106","DOIUrl":"https://doi.org/10.15567/mljekarstvo.2020.0106","url":null,"abstract":"The presented study analysed whether refrigerated storage time affects the fatty acid profile, the content of conjugated linoleic acid (CLA) and trans isomers of C18:1 and C18:2 acids in yogurts made from goat, sheep and cow milk. On the 21st day of storage, significant decreases (P<0.05) in monounsaturated fatty acids (MUFA) and polyunsaturated fatty acids (PUFA) were observed in in yogurts made from cow milk. In yogurts made from sheep and goat milk, the content of these acids fluctuated during storage. The CLA isomer in fresh yogurts ranged from 3.58 mg g-1 fat in yogurts made from sheep milk to 4.47 mg g-1 fat in yogurts made of cow milk. During storage the content of CLA significantly decreased in cow milk yogurts and significantly increased in goat milk yogurts (P<0.05), while it remained more or less unchanged throughout the entire storage period in sheep milk yogurts.","PeriodicalId":18635,"journal":{"name":"Mljekarstvo","volume":"70 1","pages":"59-70"},"PeriodicalIF":1.2,"publicationDate":"2020-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.15567/mljekarstvo.2020.0106","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43872546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MljekarstvoPub Date : 2019-10-04DOI: 10.15567/mljekarstvo.2019.0402
Katarzyna Katarzyna, E. Pecka-Kiełb, A. Zachwieja
{"title":"Impact of the volume and the profile of volatile fatty acids in the rumen fermentation on cow productivity and milk composition","authors":"Katarzyna Katarzyna, E. Pecka-Kiełb, A. Zachwieja","doi":"10.15567/mljekarstvo.2019.0402","DOIUrl":"https://doi.org/10.15567/mljekarstvo.2019.0402","url":null,"abstract":"The aim of the research was to establish relations between the selected rumen fermentation products and the milk composition in dairy cows. The experiment was conducted on 10 Polish Holstein-Friesian cows of black and white variety. The animals were kept in the free stall housing system and fed with the total mixed ration (TMR). The herd’s milk production was assessed using the A4 method and the milk analyses were obtained from the milk recordings. The rumen digesta were sampled two hours after the morning delivery of TMR using a stomach pump. The sampled digesta were diluted with buffer, homogenized and the obtained suspension was analysed using gas chromatograph with the FID detector to\u0000determine the total concentration of volatile fatty acids (VFA) and the\u0000percentage of individual VFAs. Milk composition was obtained from the RW-1 reports, and the Pearson correlation coefficient was calculated for\u0000the obtained parameters. It was determined that propionate and the relation of propionate to butyrate in the rumen digesta increased the protein content and its fractions in milk. The volatile fatty acids utilization coefficient in the rumen digesta a positive correlation to protein contents and a negative correlation to the level of caseins in milk were shown. Processes taking place in the cow rumen significantly influence the composition and quality of milk. The knowledge of volatile\u0000fatty acids content and the of individual VFAs allows for the management of the rumen fermentation in order to obtain better technological parameters of milk.","PeriodicalId":18635,"journal":{"name":"Mljekarstvo","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2019-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.15567/mljekarstvo.2019.0402","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45230345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MljekarstvoPub Date : 2019-10-04DOI: 10.15567/mljekarstvo.2019.0406
S. Borş, I. Ibănescu, Emesse Balla, A. Borș
{"title":"Changes in climate conditions and their effects on production\u0000and reproduction of medium yielding cows in temperate continental climate","authors":"S. Borş, I. Ibănescu, Emesse Balla, A. Borș","doi":"10.15567/mljekarstvo.2019.0406","DOIUrl":"https://doi.org/10.15567/mljekarstvo.2019.0406","url":null,"abstract":"The increased air temperature combined with the reduction of rainfall during hot season impairs the capacity of cows to maintain the optimal body temperature. This study tested the hypothesis that climate changes affect the medium yielding cows in temperate continental climate. The productive-reproductive parameters of 8607 milking cows from a dairy farm in North-eastern Romania were examined and correlated with changes in ambient temperatures and rainfall between the years of 1983 and 2010.\u0000We observed that the number of artificial inseminations served to cows showed a decreasing trend. The reduction in this parameter was significantly influenced by the increase in the average and maximum temperatures during hot season associated with the reduction in rainfall, as shown by regression analysis. Other studied parameters such\u0000as milk production, calving to conception interval, calving to first artificial insemination interval and conception rates at first, second and more than two services were not related to the changes in average annual temperatures, annual temperatures amplitude and annual precipitation quantities. This study suggests that, although present, the effects of climate changes on some productive-reproductive parameters of medium yielding cows in geographic areas with temperate continental climate are not as dramatic as described in other studies.","PeriodicalId":18635,"journal":{"name":"Mljekarstvo","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2019-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.15567/mljekarstvo.2019.0406","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42154227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}