scholarly journals Maiorchino cheese: physicochemical, hygienic and safety characteristics

2015 ◽  
Vol 4 (1) ◽  
Author(s):  
Francesca Conte ◽  
Andrea Ravidà ◽  
Alessandro Mandanici ◽  
Vincenzo Ferrantelli ◽  
Michele Chetta ◽  
...  
Keyword(s):  
Starter Cultures ◽  
Total Solids ◽  
Physical Chemical ◽  
Solids Concentration ◽  
Microbiological Characteristics ◽  
Traditional Cheese ◽  
Natural Microflora ◽  
Ewe's Milk ◽  
Reducing Bacteria ◽  
Lactic Bacteria

This study assessed the physical, chemical, and microbiological characteristics of traditional <em>Maiorchino</em> cheese (Italy) made from raw ewe’s milk or from a mixture with goat’s milk. Cheese samples from the same batch were analyzed after 20 days and 6, 8, 12, 17 and 24 months of ripening. A decrease in moisture level lead to progressive total solids concentration (fat, total nitrogen, total solids and chloride) during ripening. Aw values decreased from 0.97 (day 20) to 0.85 (month 24), while pH increased from 4.99 to 5.41 (6 months) followed a by reduction until 4.85 (month 24). In samples analysed 20 days after cheesemaking, aerobic mesophilic count was 1.8•107 CFU/g, Enterobacteriaceae were 2.7•106 CFU/g, <em>Staphylococcus</em> spp. were 1.8•104 CFU/g, and yeasts 4.5•105 CFU/g. Sulphite reducing bacteria were not found. Lactic bacteria count at 30°C (LAB30) and 42°C (LAB42) was about 108 CFU/g (day 20); LAB30 reduced until month 8; LAB 42 reduced until month 12; both were not detectable at months 17 and 24. Cheese-making process does not consider commercial starter cultures and LAB group is heterogeneous because of its natural microflora. Yeasts were considered as typical microflora of <em>Maiorchino</em>. Volatile compounds were examined at 6, 12 and 24 months of ripening; 54 components were identified. Statistical analysis showed that the seasoning period of 12 months was the best for <em>Maiorchino</em> flavour attributes. The characterisation of <em>Maiorchino</em> traditional cheese may be considered as significant for this old traditional product, with the aim of obtaining the PDO certification.

scholarly journals Effect of selected starter cultures on physical, chemical and microbiological characteristics and biogenic amine content in PGI Ciauscolo salami.

2016 ◽  
Vol 5 (1) ◽  
Author(s):  
David Ranucci ◽  
Anna Rita Loschi ◽  
Dino Miraglia ◽  
Roberta Stocchi ◽  
Raffaella Branciari ◽  
...  
Keyword(s):  
Biogenic Amine ◽  
Starter Culture ◽  
Starter Cultures ◽  
Geographical Indications ◽  
Physical Chemical ◽  
Basic Nitrogen ◽  
Microbiological Characteristics ◽  
Amine Content ◽  
Microbiological Analyses

The aim of the study was to evaluate the biogenic amine (BA) content of <em>Ciauscolo</em> salami made with and without the use of a selected started culture. Two batches of salami were made following the guidelines of the Protected Geographical Indications: with and without adding a commercial starter culture made of <em>Lactobacillus plantarum</em> and <em>Staphylococcus xylosus</em>. Six samples of salami per batch were collected at different ripening times (0, 15, 30, 45 and 60 days) for physical, chemical and microbiological analyses and for the determination of BA content. No differences were recorded for physical, chemical and microbiological analyses except for <em>Staphylococcus</em> spp. count at the time of casing (T0) and Total Volatile Basic Nitrogen from 30 days (T2) to the end of the ripening time (60 days, T4). After 60 days of ripening, the use of selected starter culture significantly affected the amount of putrescine (195.15 <em>vs</em> 164.43 mg/100 g in salami without and with starters, respectively), cadaverine (96.95 <em>vs</em> 104.40 mg/100 g in salami without and with starters, respectively), histamine (81.94 vs 69.89 mg/100 g in salami without and with starters, respectively) and spermine (36.88 <em>vs</em> 33.57 mg/100 g in salami without and with starters, respectively). Despite significantly higher values of TVBN, the use of selected starter culture determined no significant effects on the BA content of the products.

Physical-chemical and Microbiological Characteristics of Organic Strawberries Conserved with Biofilms and Refrigeration

2012 ◽  
Vol 1 (3) ◽  
pp. 247
Author(s):  
Raquel Pires Campos ◽  
Angela Kwiatkowski ◽  
Carolina Dario Tonhi ◽  
Edmar Clemente
Keyword(s):  
Mass Loss ◽  
Cassava Starch ◽  
Edible Coatings ◽  
Chemical Analyses ◽  
Organic System ◽  
Titrable Acidity ◽  
Physical Chemical ◽  
Microbiological Characteristics

Biodegrabable and edible coatings were applied on fresh strawberries (<em>Fragaria </em>x <em>ananassa Duch</em>), ‘Camarosa cultivar’, produced in organic system and stored at 10ºC for nine days. Color, mass loss, incidence of rottenness and chemical analyses contents was evaluated. Suspension of cassava starch and grains of kefir milk reduced evolution of fruit coloration when compared uncoated fruits. Treatment associated cassava starch and kefir liquid resulted in a lower rottenness incidence and less mass loss of the fruits, is therefore recommended for postharvest organic strawberries. Anthocyanin and titrable acidity contents increased during storage, regardless of the treatments in general.

scholarly journals DEHYDRATED APICULTURE POLLEN QUALITY

2019 ◽  
Vol 16 (31) ◽  
pp. 335-340
Author(s):  
Elen Vanessa Costa da SILVA ◽  
Igor Fernando de Araújo REIS ◽  
Leandro das Neves Tolosa de ALMEIDA ◽  
Alan Reis dos PRAZERES ◽  
Josyane Brasil da SILVA ◽  
...  
Keyword(s):  
Natural Products ◽  
Microbiological Analysis ◽  
Salmonella Spp ◽  
Sensorial Analysis ◽  
Total Sugars ◽  
Physical Chemical ◽  
Microbiological Characteristics ◽  
The City ◽  
And Staphylococcus Aureus

Due to the increase in the consumption of natural products, there has been a growing use and commercialization of bee pollen, thus, the need for a greater quality control regarding the physical-chemical and microbiological characteristics of this product is justified. In this way, the research aimed to determine the physical-chemical, microbiological and sensorial characteristics of four brands of dehydrated pollen, marketed in natural products houses in different parts of the city of Belém-Pará. Microbiological (aerobic mesophilic bacteria, fungi and yeasts, Coliformes at 45°, Salmonella sp and Staphylococcus aureus) and sensorial analyzes were carried out in the physicochemical analyzes (moisture, ashes, lipids, proteins, pH, free acidity, total sugars). The results obtained were within the parameters of quality allowed by the Brazilian legislation for dehydrated pollen. Regarding the microbiological analysis, all brands showed absence of Staphylococus aureus and Salmonella spp. For the sensorial analysis, the C mark presented better results for both flavor and aroma, confirming the quality of the dehydrated pollen commercialized in Belém-Pa.

scholarly journals Caracterização físico-química e microbiológica do esgoto da UEPB com proposta de tratamento para fins de reuso

2015 ◽  
Vol 10 (3) ◽  
pp. 54
Author(s):  
M. U. Sousa ◽  
L. M. R. Lima
Keyword(s):  
Biological Treatment ◽  
Ammonia Nitrogen ◽  
Preliminary Treatment ◽  
Microbiological Analysis ◽  
State University ◽  
Physical Chemical ◽  
Appropriate Treatment ◽  
Microbiological Characteristics ◽  
Receive Treatment

<p>Nos últimos anos, a preocupação com as questões ambientais vem sendo bastante discutidas, onde merece destaque, o descarte indevido do esgoto doméstico no meio ambiente, portanto o presente estudo objetivou realizar a caracterização físico-química e microbiológica do esgoto descartado no solo, no Centro de Ciências e Tecnologia da Universidade Estadual da Paraíba, campus de Campina Grande – PB. Para tanto foram desenvolvidas análises físico-químicas, tais como pH, Fósforo Total, DBO, DQO, Nitratos, Nitritos, Nitrogênio Amoniacal, Orto-Fosfatos e Alcalinidade, bem como análise microbiológica (coliformes). Observou-se que o efluente na unidade em questão não recebe tratamento para seu descarte, sendo identificadas características físico-químicas e microbiológicas de esgoto <em>in natura</em>. Faz-se necessário desta forma, investimentos em análises periódicas para assim realizar um tratamento adequado ao efluente visando-se reduzir os riscos ambientais e de saúde pública. Após os resultados das análises, foi proposto, além do tratamento preliminar, um tratamento biológico para o efluente, do tipo, lagoa facultativa primária seguida de duas lagoas de maturação, onde a eficiência do tratamento nos parâmetros analisados se enquadra aos padrões estabelecidos pelo CONAMA 430/2011, na qual o efluente pós - tratado poderia ser reutilizado para fins menos nobres, destinando a água potável para atividades que requerem uma qualidade melhor.</p><p><strong><em>Physicochemical and microbiological characterization of wasterwater of the UEPB with proposed of treatment for reuse purposes</em></strong></p><p><strong>Abstract</strong><strong>: </strong>In recent years, concern about environmental issues has been widely discussed, which deserves mention the improper disposal of domestic sewage into the environment, so this study aimed to perform the physicochemical and microbiological sewage discarded the soil, in the Science and Technology Center of the State University of Paraiba, campus of Campina Grande - PB. Therefore, we developed physical-chemical analysis such as pH, Total Phosphorus, BOD, COD, Nitrate, Nitrite, Ammonia Nitrogen, Orto-Phosphates and alkalinity, as well as microbiological analysis (coliforms). It was noted that the effluent in the unit in question does not receive treatment for their disposal, identified physical, chemical and microbiological characteristics of raw sewage. It is necessary therefore, investment in periodic reviews thus to carry out an appropriate treatment to effluent aiming to reduce environmental risks and public health. After the analysis results, it was proposed, in addition to preliminary treatment, a biological treatment for the effluent, type, primary facultative pond followed by two ponds maturation, in which the treatment efficiency in the analyzed parameters falls within the standards set by CONAMA 430/2011 in which the effluent post-treaty could be reused for less noble purposes, intended to clean water for activities that require a better quality<strong>.</strong></p>

scholarly journals Study on the Effect of the Breed during Post-Partum Transition Period on Various Physico-Chemical, Compositional and Microbiological Characteristics of Bovine Colostrum

2020 ◽  
Vol 39 (01) ◽  
Author(s):  
Tahir Nazir ◽  
Mohammad Ashraf Pal ◽  
Ashaq Manzoor ◽  
Tarique Padder ◽  
Asif Hassan Sofi ◽  
...  
Keyword(s):  
Total Protein ◽  
Transition Period ◽  
Fat Content ◽  
Bovine Colostrum ◽  
Plate Count ◽  
Total Protein Content ◽  
Total Solids ◽  
Microbiological Characteristics ◽  
Physico Chemical ◽  
Casein Protein

The current investigation was undertaken with the aim of studying the effect of breed of the animal on various physico-chemical, compositional and microbiological characteristics of bovine colostrum. While studying the effect of breed of the animal on various physico-chemical, compositional and microbiological characteristics of colostrum, it was found that the specific gravity, fat, total protein, casein protein, whey proteins, Lactose, total solids and solids not fat of the colostrum samples from local non-descript animals were significantly (p £ 0.05) lower compared to all other animal sources (breeds) under study. The fat content of Jersey cross (fi) [Jersey cross under field conditions] was significantly (p £ 0.05) higher than Jersey cross (fa) [Jersey cross under farm conditions]. Total protein content of Jersey and Jersey cross (fi) were found to be comparable however both these samples were found to be possessing significantly (p £ 0.05) higher values than Jersey cross (fa). Casein protein of Jersey and Jersey cross (fi) was found to be comparable however both these samples were found to be possessing significantly (p £ 0.05) higher values than Jersey cross (fa). Lactose content of Jersey was significantly (p £ 0.05) higher than Jersey cross (fi). Total solids content of Jersey cross (fi) was significantly (p £ 0.05) higher than Jersey cross (fa). Jersey cross (fi) possessed significantly (p £ 0.05) higher solids not fat content than Jersey cross (fa) and the values were found to be comparable with Jersey colostrum samples. The pH values of colostrum samples of Jersey were seen to be significantly (p £ 0.05) higher than all other sources of colostrum viz Local, Jersey cross (fa) and Jersey cross (fi). Amongst the latter three, the values were found to be comparable. The ash, electrical conductivity and total plate count (TPC) of the colostrum samples of the animal sources under study were found to be possessing comparable values having no significant (p greator than 0.05) difference among themselves whatsoever.

scholarly journals The effect of two starter cultures on some chemical and sensory properties of Macedonian traditional sausage

2021 ◽  
Vol 9 (3) ◽  
pp. 245-252
Author(s):  
Monika Stojanova ◽  
Dragutin Đukić
Keyword(s):  
Ph Value ◽  
Starter Culture ◽  
Sensory Properties ◽  
Starter Cultures ◽  
Negative Effects ◽  
Staphylococcus Carnosus ◽  
Swiss Chard ◽  
Safe Product ◽  
Favorable Conditions ◽  
Reducing Bacteria

The aim of this study is to monitor the effect of two starter cultures on some chemical and sensory properties of industrially produced Macedonian traditional sausage. The research covered three variants: Variant 1: Control variant (conventionally produced Macedonian traditional sausages using nitrite salt and powdered acerola); Variant 2: Macedonian traditional sausages where the basic formulation was enriched by addition of starter culture CS-300 (Staphylococcus carnosus ssp. utilis + Staphylococcus carnosus) in combination with Swiss chard powder and powdered acerola; Variant 3: Macedonian traditional sausages where the basic formulation was enriched by addition of starter cultures CS-300 (Staphylococcus carnosus ssp. utilis + Staphylococcus carnosus) and BLC-78 (Pediococcus acidilactici + Staphylococcus carnosus) in combination with Swiss chard powder and powdered acerola. Starter cultures have a positive effect on changing the pH value of sausages, which creates favorable conditions for the development of the desired microflora. In the sausages from variant 2 the value for water activity is constant, and the largest decrease was determined in the variant 3. Nitrate-reducing bacteria in combination with a natural source of nitrates (Swiss chard powder and leek) are a suitable substitute for nitrite salt, thus eliminating its negative effects on consumer health. According to the obtained results, with the use of the starter culture CS-300 good quality of the sausages is achieved. At the same time a safe product is obtained where the use of nitrite salt is completely eliminated.

Effect of autochthonous starter cultures on the biogenic amine content of ewe's milk cheese throughout ripening

2014 ◽  
Vol 44 ◽  
pp. 271-277 ◽  
Author(s):  
E. Renes ◽  
I. Diezhandino ◽  
D. Fernández ◽  
R.E. Ferrazza ◽  
M.E. Tornadijo ◽  
...  
Keyword(s):  
Biogenic Amine ◽  
Starter Cultures ◽  
Amine Content ◽  
Ewe's Milk

Effects of Meat Type, Storage Time and Temperature on Various Physical, Chemical and Microbiological Characteristics of Ground Pork

1987 ◽  
Vol 50 (11) ◽  
pp. 948-951 ◽  
Author(s):  
DONNA S. BENTLEY ◽  
JAMES O. REAGAN ◽  
NELSON A. COX ◽  
J. STAN BAILEY
Keyword(s):  
Storage Temperature ◽  
Raw Materials ◽  
Thiobarbituric Acid ◽  
Bacterial Count ◽  
Total Bacterial Count ◽  
Pork Sausage ◽  
Physical Chemical ◽  
Microbiological Characteristics ◽  
Plate Counts ◽  
Meat Type

Whole-hog sausage was prepared from hot- and cold-boned pork raw materials to determine the effects of meat type, storage temperature and length of storage on various processing and bacteriological characteristics. Samples were stored at −1 and 4°C for 0, 28 and 56 d. Various physical, chemical and microbiological properties of the sausage were evaluated. Thiobarbituric acid (TBA) values were not affected by meat type (pre or postrigor). Hunter-Color values varied significantly among the meat types and storage temperatures. Total bacterial counts varied significantly among the hot- and cold-boned pork sausage samples (day 0). Cold-boned sausage stored at −1°C had lower plate counts of the various treatments for days 28 and 56. Pseudomonas was the predominant organism found in hotand cold-boned sausage samples. Hot-boned sausage exhibited a more diverse bacterial population than did cold-boned sausage. More gram-positive organisms were found in hot-boned sausage samples. Cold-boned sausage had a lower total bacterial count at day 0 and maintained lower counts and therefore a longer shelf life throughout the study when held at −1°C.

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