scholarly journals Categorization of animal feed according to microbiological quality - preferable improvement in the food chain

2021 ◽  
Vol 854 (1) ◽  
pp. 012065
Author(s):  
Ksenija Nesic ◽  
Radmila Mitrovic ◽  
Radmila Markovic
Keyword(s):  
Animal Feed ◽  
Microbiological Quality ◽  
Animal Nutrition ◽  
Number Of Microorganisms ◽  
Microbiological Criteria ◽  
Potential Pathogenicity ◽  
Insight Into ◽  
Class Iv

Abstract Given the fact that the law on animal feed in Serbia has long been expected and that the current Regulation on the quality of animal feed, which includes microbiological criteria, requires improvement over the years, it is time to choose the best new solutions. The recommendable change that would bring the categorization of animal feed according to more objective and comprehensive criteria is based on the use of the VDLUFA (Verbands Deutscher Landwirdschaftlicher Untersuchungs und Forschungsanstalten) method. In several European countries, it has become routine, due to the great interest of feed producers and animal breeders in good knowledge of microbiological quality of feed as a guarantee of a wholesome final product. It involves determination of the contents of moulds, yeasts and bacteria while taking into account their potential pathogenicity. Based on the number of microorganisms, divided into seven groups, feed and feedingstuffs are classified into four categories. Classes I to III can be placed on the market, while class IV is not suitable for animal nutrition. More precise, regular determination of microorganisms would also provide a better insight into other common feed-born problems, such as, for instance, the possibility of mycotoxin occurrence.

scholarly journals Assessment of the microbiological quality of feed using the Verbands Deutscher Landwirdschaftlicher Untersuchungs und Forschungsanstalten (VDLUFA) method

2020 ◽  
Vol 74 (1) ◽  
pp. 68-76
Author(s):  
Ksenija Nesic ◽  
Marija Pavlovic ◽  
Snezana Ivanovic
Keyword(s):  
Animal Feed ◽  
Microbiological Quality ◽  
Animal Nutrition ◽  
Detailed Instruction ◽  
Standard Operating ◽  
Number Of Microorganisms ◽  
Animal Feeding ◽  
Potential Pathogenicity ◽  
Microbiological Status

Introduction. The Verbands Deutscher Landwirdschaftlicher Untersuchungs und Forschungsanstalten (VDLUFA) is an association of German agronomic, analytical and scientific institutes dealing with various types of research in the field of agronomy and the development, adaptation and validation of analytical methods. This association has established an approach for determining the microbiological quality of feed based on the contents of molds, yeasts and bacteria by taking into account not only their total numbers (cfu/g), but also their potential pathogenicity. According to the degree of the potential pathogenicity, microorganisms are divided into seven groups. Based on the number of microorganisms in the seven groups, feed and feedingstuffs are classified into four categories according to microbiological quality. Materials and Methods. This method for categorization of feed is described in Methods Book III. Detailed instruction is given within the four Standard Operating Procedures (SOPs). Results and Conclusions. The VDLUFA method of assessing animal feed and feedingstuffs is a far more detailed approach that gives a more complete picture of the actual microbiological status of feed than the approach currently used in Serbia. Feed placed on the market to be used in animal nutrition should meet the criteria for classification into classes I to III, in accordance with the parameters laid down in the method. Animal feed that belongs to class IV is not suitable for animal feeding. This method could be a useful guideline in the modernization of hygienic standards for feed in Serbia in the future.

Influence of microorganisms on retinol isomerization in milk

2008 ◽  
Vol 75 (1) ◽  
pp. 37-43 ◽  
Author(s):  
Gianfranco Panfili ◽  
Alessandra Fratianni ◽  
Tiziana Di Criscio ◽  
Daniela Gammariello ◽  
Elena Sorrentino
Keyword(s):  
Microbiological Quality ◽  
Streptococcus Thermophilus ◽  
Raw Milk ◽  
Microbial Evolution ◽  
Different Temperatures ◽  
Quality Of Milk ◽  
Milk Storage ◽  
Insight Into

In order to have a deeper insight into the retinol isomerization phenomenon, in this work different milk samples have been analysed for their content of trans retinol and its cis-isomers, by means of reliable HPLC techniques. Levels of the different isomers and the degree of retinol isomerization (13-cis/all-trans ratio, %) have been monitored during milk storage at different temperatures and after addition of specific microorganisms. In raw milk stored at 4°C for 96 h the degree of retinol isomerization shifted from 1·1 to 2·3%, while in raw milk stored at 22°C for 24 h it increased from 1·1 to 12·7%. Among microorganisms tested in pasteurized milk, the most active in causing an increment in the 13-cis/all-trans ratio (%), from 3·4 to 33·4% in 8 h, was Streptococcus thermophilus. The results obtained demonstrated a relationship between microbial evolution and retinol isomerization. Therefore, the determination of retinol isomers is of importance not only for a more precise evaluation of vitamin A activity but also for the evaluation of the microbiological quality of milk.

scholarly journals Evaluation of nutritional value and microbiological safety in commercial dog food

2021 ◽  
Author(s):  
Katarzyna Kazimierska ◽  
Wioletta Biel ◽  
Robert Witkowicz ◽  
Jolanta Karakulska ◽  
Xymena Stachurska
Keyword(s):  
Nutritional Value ◽  
Microbiological Quality ◽  
Microbial Count ◽  
Pet Food ◽  
Microbiological Safety ◽  
Dog Food ◽  
Number Of Microorganisms ◽  
Contaminated Food ◽  
Dry Food

AbstractIn addition to properly balancing nutritional value in accordance with the needs of a dog, estimating the microbiological quality of dog food is crucial in providing healthy and safe foods. The aim of this study was to examine the quality of dry food for adult dogs, with particular reference to: (1) evaluating the nutritional value and compliance with nutritional guidelines for dogs, (2) comparing the nutritional value of dog foods, with particular emphasis on the division into cereal and cereal-free foods, and (3) evaluating their microbiological safety. All thirty-six evaluated dry dog foods met the minimum European Pet Food Industry FEDIAF requirement for total protein and fat content. The total aerobic microbial count in the analyzed dry dog foods ranged from 2.7 × 102 to above 3.0 × 107 cfu/g. In five (14%) dog foods the presence of staphylococci was detected; however, coagulase positive Staphylococcus (CPS) was not found. Mold presence was reported in one cereal-free dog food and in six cereal foods. In none of the analyzed foods Enterobacteriaceae were found, including coliforms, Escherichia coli and Salmonella spp. Bacteria of the genus Listeria and Clostridium as well as yeasts were also not detected. In conclusion, the evaluated dry dog foods had varied microbiological quality. The detected number of microorganisms may have some implications for long-term consumption of contaminated food. The lack of European Commission standards regarding the permissible amounts of microorganisms in pet food may result in insufficient quality control of these products.

Microbiological Quality of Commercial Tofu

1984 ◽  
Vol 47 (3) ◽  
pp. 177-181 ◽  
Author(s):  
T. G. REHBERGER ◽  
L. A. WILSON ◽  
B. A. GLATZ
Keyword(s):  
Microbiological Quality ◽  
Plate Count ◽  
Microbial Counts ◽  
Colony Forming Units ◽  
Low Levels ◽  
Microbial Groups ◽  
Yeasts And Molds ◽  
Processing Techniques

A study was done to investigate the microbiological quality of commercial tofu available in local retail outlets. A sampling method was first developed to obtain accurate and representative microbial counts of individual pieces of tofu. Plate count determination of total aerobic organisms, psychrotrophs, coliforms, sporeformers, yeasts and molds, and staphylococci were made on 60 tofu samples (representing three lots each of four different brands) obtained within 24 h after delivery to the retail store. In addition, for two brands that provided manufacturer's pull dates, the same microbial counts were obtained for samples stored in the laboratory at 10°C until the pull date. Of the tofu sampled immediately after purchase, 83% of the lots tested had total counts greater than 106 colony-forming units (CFU)/g and psychrotrophic counts greater than 104 CFU/g. In addition, 67% of the lots tested had confirmed coliform counts greater than 103 CFU/g. Very low levels (less than 10 CFU/g) of all other microbial groups tested for were found in the majority of lots. Samples held until the manufacturer's pull date contained higher total and psychrotrophic counts but lower or stable counts of other organisms compared with samples tested immediately after purchase. To improve the microbiological quality of tofu, processors need to reduce initial loads by improving sanitation and processing techniques, and retailers should provide more consistent and colder refrigerated storage.

scholarly journals Reverse Osmosis of Whey - Valuable Biocomponent of Feed and Food

2020 ◽  
Vol 70 (12) ◽  
pp. 4482-4487
Keyword(s):  
Reverse Osmosis ◽  
Biochemical Properties ◽  
Animal Nutrition ◽  
Antioxidant Compounds ◽  
Cheese Industry ◽  
Animal Feeding ◽  
Western Romania ◽  
Technological Options

Whey is a high-quality dairy by-product from cheese industry, being an important source of valuable proteins. It is important in human and animal nutrition due to its content in enzymes, hormones, vitamins, minerals, and antioxidant compounds, it has low lactose content, very little or it is free of lipids, but the dehydration (drying) technique must be very well chosen to preserve the quantity and quality of components. The objective of our study was to analyze the possibility of concentrating whey by reverse osmosis and having in view the possibility to preserve most of the biochemical properties of whey. Thus, we made comparative tests for quantitative determination of total protein, lipids, pH and acidity for - raw, skimmed and concentrated whey. The results showed that reverse osmosis is a good, cheap and easy-to-use method in cheese factories to obtain whey with well-preserved components. Most of the farmers from western Romania (especially in Timis county) use whey as ingredient of feed products. Studies from previous years present whey as an ingredient of nutritional supplements for animal feeding plan, as well as an ingredient in supplements for athletes and alternative medicine. There are many technological options for whey processing, but the final option must be very well correlated with the final nutritional purpose. Keywords: whey, feed, human, nutrition

scholarly journals Influence of wastewater reuse on the microbiological quality of sunflowers for animal feed

2013 ◽  
Vol 8 (2) ◽  
Author(s):  
Roseanne Santos de Carvalho ◽  
José Sebastião dos Santos Filho ◽  
Larissa Oliveira Gama de Santana ◽  
Danielle Almeida Gomes ◽  
Luciana Coêlho Mendonça ◽  
...  
Keyword(s):  
Animal Feed ◽  
Wastewater Reuse ◽  
Microbiological Quality

scholarly journals Physical and microbial qualities of raw milk collected from Bangladesh Agricultural University dairy farm and the surrounding villages

1970 ◽  
Vol 6 (2) ◽  
pp. 217-221 ◽  
Author(s):  
MTG Khan ◽  
MA Zinnah ◽  
MP Siddique ◽  
MHA Rashid ◽  
MA Islam ◽  
...  
Keyword(s):  
Microbiological Quality ◽  
Dairy Farm ◽  
Raw Milk ◽  
Viable Count ◽  
Physical Parameters ◽  
Total Viable Count ◽  
Coliform Count ◽  
Milk Samples

The present study was undertaken with the aim of investigating the physical parameters (e.g. organoleptic and specific gravity of raw milk) and also to study the microbiological quality of raw milk (total viable count, Coliform count and Staphylococcal count) from different villages and Bangladesh Agricultural University (BAU) Dairy Farm of Mymensingh District of Bangladesh, during the period from July to November 2007. A total number of 100 raw milk samples were collected at morning and evening from BAU dairy farm and surrounding four villages of BAU campus. The organoleptic and bacteriological qualities of each sample were analyzed. The organoleptic examination included taste panel score to assess consumer's acceptance and the bacteriological analysis comprised enumeration of total viable count (TVC), total colifrom count (TCC) and total staphylococcal count (TSC) for the determination of sanitary quality. The organoleptic quality of the milk samples is more or less same except the Churkhai milk samples which had flat taste (in 16% milk sample). The average values of TVC/ml were log 5.920, 5.934, 6.007, 6.075 and 6.127 for BAU Dairy Farm, Boira, Shutiakhali, Churkahai and Paglabazar respectively; coliform count were log 2.501, 2.522, 2.550, 2.620 and 2.619 respectively; staphylococcal count were log 2.832, 2.812, 2.866, 2.931 and 2.988 respectively. So, it may be concluded that the raw milk samples of BAU Dairy Farm were superior to others collected from the selected villages which may be due to maintaining better hygienic condition. Key words: Raw milk, physical and microbial quality   doi: 10.3329/bjvm.v6i2.2339 Bangl. J. Vet. Med. (2008). 6 (2): 217-221

scholarly journals Determination of Biogenic Amines and Endotoxin in Squid, Musky Octopus, Norway Lobster, and Mussel Stored at Room Temperature

2010 ◽  
Vol 61 (4) ◽  
pp. 389-397 ◽  
Author(s):  
Ljerka Prester ◽  
Tatjana Orct ◽  
Jelena Macan ◽  
Jelena Vukušić ◽  
Dubravka Kipčić
Keyword(s):  
Biogenic Amines ◽  
Biogenic Amine ◽  
Room Temperature ◽  
Rapid Assessment ◽  
Microbiological Quality ◽  
Norway Lobster ◽  
Common Squid ◽  
Species Specific

Determination of Biogenic Amines and Endotoxin in Squid, Musky Octopus, Norway Lobster, and Mussel Stored at Room TemperatureLittle research has been published on the indicators of spoilage in Mediterranean molluscan shellfish and crustaceans. Thus is why we studied changes in the concentrations of endotoxin and four biogenic amines (histamine, putrescine, tyramine and cadaverine) in European common squid (Loligo subulata, Lamarck, 1798), musky octopus (Eledone moschata, Lamarck, 1798), Norway lobster (Nephrops norvegicus, Linnaeus, 1758), and mussel (Mytilus galloprovincialis, Lamarck, 1819) from the Adriatic Sea stored at room temperature for 24 h. Endotoxin load in fresh squid, Norway lobster, and mussel (<1 EU mg-1) indicated good microbiological quality of raw samples. Biogenic amine index (as the sum of histamine, putrescine, tyramine, and cadaverine) correlated well with endotoxin load in squid (r=0.978, p<0.001) and musky octopus (r=0.874, p<0.01). A good correlation was also found between endotoxin and putrescine in Norway lobster (r=0.777, p<0.05). The highest endotoxin load was found in decomposed mussels and was associated with histamine alone. In conclusion, increase in biogenic amine levels is species-specific. Endotoxin analysis could be used for rapid assessment of microbiological quality of cephalopods and shellfish.

scholarly journals Insight into the Way the Content of Biologically Active Compounds in Meadowsweet Inflorescences (Filipendula ulmaria (L.) Maxim.) Is Shaped by Phytosociological Habitats

Molecules ◽  
2021 ◽  
Vol 26 (17) ◽  
pp. 5172
Author(s):  
Kinga Stawarczyk ◽  
Aleksandra Chrupek ◽  
Agnieszka Sękara ◽  
Michał Gostkowski ◽  
Małgorzata Karbarz
Keyword(s):  
Genetic Material ◽  
Biologically Active ◽  
Raw Material ◽  
Total Phenolic ◽  
Filipendula Ulmaria ◽  
Biochemical Compounds ◽  
Active Chemical ◽  
Insight Into

A collection of herbs from the natural environment remains not only a source of raw material but also provides evidence of chemical differentiation of the local populations. This work aimed at performing a phytosociological analysis of seven different stands of meadowsweet (Filipendula ulmaria (L.) Maxim.) occurrence. A determination of total phenolic compounds and salicylates and the antioxidant activity of dried meadowsweet inflorescences (Flos ulmariae) was also performed. Active chemical compounds in F. ulmaria inflorescences were related to chemotype and diversified between investigated populations. Geographical distance and variation in phytosociological locations affected chemical composition in different ways, shaping the content of biochemical compounds crucial for herbal material quality. The obtained results can be a valuable indicator for Nexo and Baligród populations, which are good genetic material for research, breeding, and cultivation due to their biochemical composition, especially with respect to salicylates, as major compounds of determining market quality of Flos ulmariae.

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