Search results

The purpose of this paper is to investigate the microbial profile of food contact surfaces (FCS) in foodservice industry of Serbia.

The research covered 21,485 samples collected from 1,085 foodservice establishments during a period of 43 months. Results were deployed in terms of food contact materials, types of FCS and types of foodservice establishments.

Highest share of results=2 log₁₀ CFU/cm² were present on plastic surfaces during Autumn, while on ceramic and stainless steel surfaces highest share were observed during the Summer season. Take-away food establishments had the highest share of results=2 log₁₀ CFU/cm² for both stainless steel and plastic surfaces. Highest share of stainless steel surfaces with microbial load=2 log₁₀ CFU/cm² were cutlery, dishes and knives. Plastic dishes had the highest share of results=2 log₁₀ CFU/cm² while cutting boards had the majority of results between 1 log₁₀ CFU/cm² and 2 log₁₀ CFU/cm².

Limitations of the research stem from the discussion of the nature of the FCS like porosity and other physical characteristics.

This research has a practical application in terms of establishing process hygiene levels depending on types of food contact materials and types of FCS and seasonal variations.

The findings of this study are worthy, in respect to possible correlation between seasonal variation and process hygiene requirements and can facilitate a better understanding of microbial risks associated with food preparation.

This paper aims to assess the effect of natural antioxidants (Tulsi, Lemon grass and Aloevera) on sensory and microbiological quality as well as on Thiobarbituric acid (TBA) values of Redplum and Sahiwal-based milk smoothies stored under refrigeration.

The smoothies were developed by incorporating optimum level of natural antioxidants, fresh red plum and Sahiwal milk. They were aerobically packaged in low-density polyethylene pouches and stored under refrigeration (4 ± 2°C) till its spoilage. These smoothies were assessed for various storage quality parameters like sensory parameters, microbiological quality and TBA values at regular interval of two days.

Smoothies made without using natural antioxidants were in good condition for four days, and treated smoothies were stored well for six days. The microbial profile showed significant (p < 0.05) increase in SPC and psychrophilic counts on advancement of storage days. However, no coliform and yeast and mould were detected in all variants of smoothies during storage. TBA values were also increased during storage. But microbial counts and TBA both were under the prescribed limit as described by various organizations. Smoothies treated with Tulsi were found best followed by lemongrass- and aloevera-treated products.

Amino acid and fatty acid profiling may be incorporated to known how the exact nutritional value.

Developed milk smoothies using natural antioxidants may serve the purpose of functional food.

As per the authors, today, world is seeking for health providing components with longer product shelf life. Therefore, the product may serve the purpose.

The paper has demonstrated that the Sahiwal milk and red plum-based smoothies were of high acceptability. Their shelf life was found best when treated with Tulsi, Lemon grass and Aloevera natural antioxidants. It was better in all spectrums like lower microbial counts, higher sensory attributes and lower TBA counts as compared to untreated products.

Whey is a by-product of paneer, cheese and casein industry and considered as a dairy waste. Worldwide, approximately 180–1,900 million tons of whey is produced annually. Whey is classified as a high pollutant due to its organic matter level. Owing to its high chemical oxygen demand and biological oxygen demand, it is a big threat to the environment. Whey contains 4.5%–5.0% lactose, 0.6%–0.7% protein, 0.4%–0.5% lipids, vitamins and minerals. Due to its high nutritional profile, it is a good substrate for the microorganisms for production of natural pigments. The purpose of this paper is to review the utilization of low cost substrate (whey) for production of various types of pigments and their applications in different sectors.

The databases for the search included: Scopus, PubMed, Science Direct, Web of Science, Research gate and Google. The main search was directed towards different types of natural pigments, stability, technologies for enhancing their production and contribution towards circular economy. Approximately 100 research papers were initially screened. A global search was conducted about natural pigments. Research articles, review papers, books, articles in press and book chapters were the type of search for writing this review paper.

Production of natural pigments using whey and their addition in food products not only improves the colour of food but also enhances the antioxidant properties of food products, helping the health benefits by chelating free radicals from the body. The sustainable use of whey for production of natural pigments can improve the bio-based economy of different industries and thereof the national economy.

Efficient utilization of whey can bring a lot more opportunities for production of natural pigments in a sustainable manner. The sustainable approach and circular economy concepts will benefit the dependent industries and health conscious consumers. The potential uses of whey for the production of natural pigments using diverse organisms are highlighted in this paper.

The purpose of this study was to explore the possibilities of utilization of chicken meat in the preparation of chicken meat noodles and subsequent storage at ambient temperature.

Chicken meat was incorporated at the levels, viz., 0 and 40 per cent, replacing refined wheat flour in the formulation. Proximate composition, pH, water activity (a_w), free fatty acid (FFA), thio-barbituric acid reacting substances (TBARS), water absorption index (WAI), water solubility index (WSI), textural profile analysis (TPA), microbial quality and sensory evaluation were assessed at 10-day interval up to 30 days.

Moisture, a_w, TBARS, FFA, WAI, crispiness, total plate count (TPC) and yeast and mould values increased significantly (p < 0.05), whereas, fibre, ash, pH, WSI, hardness, work of shearing and sensory attributes showed significant (p < 0.05) decrease. However, all these parameter, viz., microbial quality, TBRS, FFA and sensory attributes, were within the acceptable limit during the entire storage study.

Quality of the products may be improved by the incorporation of some natural antioxidant and antimicrobial agent in chicken meat noodles.

Consumption and demand of the noodles is increasing due to its easy preparation and taste; however, it is poor in nutritive quality. Incorporation of the chicken meat in the noodles improves the nutritive values and sensory attributes, which is important for the marketability of the meat products. The keeping quality of chicken meat noodles was comparable to the control noodles at ambient temperature up to 30 days. Noodles industry provides an alternate sector for the utilization of meat and enhancing its overall quality attributes.

The purpose of this paper is to optimize the processing conditions of ready-to-eat (RTE) milk “coagulum” rings.

Milk “coagulum” rings were prepared from milk coagulum. Milk at four different level of milk fat (0.1, 1.5, 3 and 4.5 percent) were used to obtain milk coagulum of four different fat level for preparing milk “coagulum” rings. Unripe banana powder (UPB) and banana peel powder (BPP) were incorporated at three different levels separately. The incorporation levels were also optimized to be 11 percent for UPB and 6 percent for BPP on the basis of sensory evaluation.

The yield, ash, moisture and total dietary fiber content of products with optimized level of UPB and BPP were significantly higher as compared to control while the protein and fat contents were lower. Incorporation of extenders resulted in a significant reduction in the color value of the treated products. The water activity was highest for T₂ and lowest for control at the end of 42 days. TBARS as lipid oxidation parameter was highest for control and the microbial count was comparable in T₁ and T₂ where as it was higher in control. The sensory scores of the control was higher than the two treated products during the entire storage period.

The shelf stable RTE milk coagulum-based snack using 1.5 percent fat can provide a nutritious, palatable and healthy product to the consumers.

The New Zealand (NZ) Government's commitment to a sustainable, low‐emissions energy future may be met, in part, by expanding bioenergy systems fuelled by short‐rotation forestry through utilising lower quality land affecting soil organic matter content and soil CO₂ flux. The purpose of this paper is to investigate the carbon sequestration potential of a range of soil conditioners in order to minimise or offset carbon emissions due to ground disturbance.

Seven soil conditioners are evaluated using incubation chambers to measure the affect of their incorporation within three NZ soil types on soil respiration.

Charcoal is found to produce a distinct and significant carbon sequestering trend, as did newspaper and whey. Conversely, vegetable oil, paper mill pulp, biodiesel and methanol showed overall carbon emitting trends.

The research is limited as only CO₂ is monitored within the incubation chambers rather than the whole gaseous carbon profile. No microbial observations are conducted.

The investigation concludes that of the conditioners observed, charcoal, newspaper and whey warrant further observation as carbon sequestration soil conditioners.

The study forms part of the foundations within the development of soil conditioners specifically designed for carbon sequestration.

The New Zealand (NZ) Government's commitment to a sustainable, low emissions energy future may be met, in part, by expanding bioenergy systems fuelled by short rotation forestry through utilising lower quality land affecting soil organic matter content and soil CO₂ flux. The purpose of this paper is to investigate the carbon sequestration potential of a range of soil conditioners in order to minimise or offset carbon emissions due to ground disturbance.

Seven soil conditioners are evaluated using incubation chambers to measure the affect of their incorporation within three NZ soil types on soil respiration.

Charcoal is found to produce a distinct and significant carbon sequestering trend, as do newspaper and whey. Conversely, vegetable oil, paper mill pulp, biodiesel and methanol showed overall carbon emitting trends.

The research is limited as only CO₂ is monitored within the incubation chambers rather than the whole gaseous carbon profile. No microbial observations are conducted.

The investigation concluded that of the conditioners observed, charcoal, newspaper and whey warrant further observation as carbon sequestration soil conditioners.

The paper forms part of the foundations within the development of soil conditioners specifically designed for carbon sequestration.

The purpose of this paper is to evaluate the quality and safety of street-vended warankasi, a Nigerian soft white cheese.

A total of 80 samples were collected in two batches of 40 samples each in January and June, 2015 from eight major markets from Ibadan, Oyo State, Nigeria. The samples were analyzed for the proximate components, quality indices (total soluble nitrogen, TSN and volatile fatty acid, VFA), and for the presence of pathogenic bacteria, Campylobacter jejuni (CJ), Listeria monocytogenes (LM), Mycobacterium tuberculosis (MT), Salmonella spp. (SS), Escherichia coli (EC), and Yersinia enterocolitica (YE), and heavy metals such as (lead (Pb), cadmium (Cd), mercury (Hg), and chromium (Cr) concentrations.

The results revealed that the values of moisture, protein, fat, crude fiber, and ash contents (%) of warankasi samples were in the range 46.26±1.41-51.24±1.61, 33.92±1.18-37.26±1.42, 6.74±0.64-8.33±0.96, 1.27±0.02-1.73±0.09, 1.31±0.03-1.78±0.08, respectively. The values of TSN (mgN/kg) and VFA (%) were in the range of 1.19+0.10-2.54+0.18, and 5.79+0.19-9.12+0.30, respectively. The results further revealed the presence of CJ and SS and the absence of LM, MT, EC, and YE from the warankasi samples. Heavy metals detected in all the warankasi samples were generally below the maximum acceptable limits set by the World Health Organization for Pb (0.3 ppm), Cd (0.2 ppm), Hg (0.2 ppm), and Cr (0.5 ppm) with the exemption of samples from Iwo Road and Ojoo which were higher than other samples.

This research work was conducted between January and June, 2015 and better results could be obtained if the study had been done for a longer period of time.

The paper helps in showing the quality and microbial safety of street-vended warankasi and this may bring imperative information and general consciousness on the microbiological safety of warankasi.

Much has been done concerning warankasi processing but little work has been done concerning street-vended warankasi. Therefore, this study was carried out to assess it.

The purpose of this study is to evaluate the effect of curing ingredients (salt, sugar, nitrate and nitrite) and nisin as preservative on the storage stability of a traditional smoked pork product of Mizoram known as Vawksa rep, under different packaging conditions.

Meat cuts (preferably ham) were cut into small pieces of uniform size and allotted to four different treatment groups, namely, T₁ (Traditional Vawksa rep + Aerobic packaging); T₂ (Traditional Vawksa rep + Vacuum packaging); T₃ (Modified Vawksa rep + Aerobic packaging) and T₄ (Modified Vawksa rep + Vacuum packaging). Vawksa rep is traditionally produced by light smoking of pork chunks. Modification was carried out by applying curing prior to smoking and applying nisin to the pork chunks after smoking and before packaging. The products were compared on the basis of physicochemical, microbiological, proximate composition and sensory qualities at five days interval under refrigerated (4 ± 1°C) conditions.

Among the treatments, pH was recorded significantly lower for T₄ as compared to other treatments with the advancement of the storage periods. The mean tyrosine value and thio-barbituric acid number of all the treatment show increasing trend with the advancement of the storage period. T₄ had better microbiological quality than other treatments, with lower aerobic plate count, Coliform count and Yeast and Mould count. Aerobic plate count was found to differ significantly (p < 0.05) throughout the period of storage. Coliform and Yeast and Mould counts were not detected in T₃ and T₄ on entire storage period. The sensory evaluation revealed highest scores for appearance, flavour, texture, juiciness and overall acceptability for T₄ than other treatments.

The manuscript has stated that combination of curing ingredients and nisin improved all the attributes (physicochemical, microbiological and sensory) and also ensured a longer shelf-life of the product.

This paper aims to focus on the effect of fermentation on wheat-chickpea-rice weaning blend.

Wheat, chickpea, and rice were blended and fermented with Rhizopus koji for 60 h at 29±2°C at an interval of 15 h. Blends were analyzed using methods reported in the literature for physicochemical and sensory properties.

Protein content of the weaning blends increased progressively from 14.63 percent in the unfermented to 20.89 percent after 60 h of fermentation, while the fat content decreased as fermentation time increases. The pH of the samples gradually decreased from 4.53 to 3.83 with gradual increase in titratable acidity as fermentation time increases. The water absorption capacity, total plate count, and yeast and mold count were found to be in the range 112.2±1.16 to 171±1.67 percent, 1.0×103 to 1.3×103 cfu/g, and 700 to 800 cfu/g, respectively. In terms of sensory analysis, 15-h fermented sample was found to be the best.

The paper has demonstrated effect of fermentation on wheat-chickpea-rice weaning blend.