scholarly journals Development of “Quadrello di Ovino”, a Novel Fresh Ewe’s Cheese

Foods ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 25
Author(s):  
Giuliana Garofalo ◽  
Gabriele Busetta ◽  
Giuseppe Maniaci ◽  
Maria Teresa Sardina ◽  
Baldassare Portolano ◽  
...  
Keyword(s):  
Dairy Product ◽  
Streptococcus Thermophilus ◽  
Product Portfolio ◽  
Chemical Parameters ◽  
Specific Chemical ◽  
South Italy ◽  
Volatile Organic ◽  
Ovine Cheese ◽  
Plate Counts ◽  
Ewe's Milk

This work was performed to produce a new soft ewe’s milk cheese, namely “Quadrello di ovino” (QdO) cheese, to enlarge ewe’s dairy product portfolio of South Italy, barely limited to Pecorino cheese typology. Cheese making was performed applying the technology for “Crescenza” cheese typology with some modifications. In particular, pasteurized ewes’ milk was inoculated with two commercial starter formulations (SF1 and SF2) of Streptococcus thermophilus to obtain two different productions (QdO-P1 and QdO-P2, respectively). Plate counts demonstrated the ability of both starter formulations to drive the fermentation process, since S. thermophilus counts reached 109 CFU/g in both productions. Generally, the two starter formulations did not affect the chemical composition of QdO cheeses that contained, on average, 64.08% dry matter of which approximately 54.99% were fats and 36.39% proteins. Among chemical parameters, significant differences were registered for secondary lipid oxidation state (significantly lower for QdO-P2), fatty acids and volatile organic compounds (VOCs). However, the differences registered among cheese VOCs from were not perceived by the panelists who recognized both cheese productions highly similar, although QdO-P2 cheeses were mostly appreciated by the judges. This study allowed to produce a novel fresh ovine cheese with specific chemical and sensorial characteristics well appreciated by consumers.

scholarly journals Effect on the Antioxidant, Lipoperoxyl Radical Scavenger Capacity, Nutritional, Sensory and Microbiological Traits of an Ovine Stretched Cheese Produced with Grape Pomace Powder Addition

Antioxidants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 306 ◽  
Author(s):  
Raimondo Gaglio ◽  
Ignazio Restivo ◽  
Marcella Barbera ◽  
Pietro Barbaccia ◽  
Marialetizia Ponte ◽  
...  
Keyword(s):  
Grape Pomace ◽  
Pcr Analysis ◽  
Radical Scavenger ◽  
Acid Generation ◽  
Functional Aspects ◽  
Ovine Cheese ◽  
Plate Counts ◽  
Ewe's Milk ◽  
Red Grape ◽  
Experimental Trials

An innovative ovine cheese enriched with red grape pomace powder (GPP) was produced to improve the functional properties of Vastedda cheese typology. Vastedda cheese making was performed adding GPP and four selected Lactococcus lactis strains (Mise36, Mise94, Mise169 and Mise190). For each strain, 40 L of pasteurized ewe’s milk was divided into two aliquots representing control and experimental trials. Control cheese (CC) production did not contain GPP, while the experimental cheese (EC) production was enriched with 1% (w/w) GPP. GPP did not slow down starter development and acid generation. Plate counts and randomly amplified polymorphic DNA (RAPD)-PCR analysis confirmed the dominance of the starters in all trials. The evolution of the physicochemical parameters showed that EC productions were characterized by lower fat content, higher protein content, and higher values of secondary lipid oxidation. Sensory evaluation indicated that the cheeses produced with the strain Mise94 were those more appreciated by the judges. Thus, the last cheeses were investigated for some functional aspects: GPP enrichment significantly increased antioxidant activity and lipoperoxyl radical scavenger capacity, confirming that grape polyphenol inclusion in cheese represents an optimal strategy for the valorization of ovine cheeses as well as winemaking industry by-products.

A Novel Method for the Analysis of Volatile Organic Compounds (VOCs) from Red Flour Beetle Tribolium castaneum (H.) using Headspace-SPME Technology

2020 ◽  
Vol 16 (4) ◽  
pp. 404-412 ◽  
Author(s):  
Ihab Alnajim ◽  
Manjree Agarwal ◽  
Tao Liu ◽  
YongLin Ren
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Tribolium Castaneum ◽  
Solid Phase ◽  
Chemical Signals ◽  
Red Flour Beetle ◽  
Specific Chemical ◽  
Flour Beetle ◽  
Volatile Organic ◽  
Spme Fibre

Background: The red flour beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) is one of the world’s most serious stored grain insect pests. A method of early and rapid identification of red flour beetle in stored products is urgently required to improve control options. Specific chemical signals identified as Volatile Organic Compounds (VOCs) that are released by the beetle can serve as biomarkers. Methods: The Headspace Solid Phase Microextraction (HS-SPME) technique and the analytical conditions with GC and GCMS were optimised and validated for the determination of VOCs released from T. castaneum. Results: The 50/30 μm DVB/CAR/PDMS SPME fibre was selected for extraction of VOCs from T. castaneum. The efficiency of extraction of VOCs was significantly affected by the extraction time, temperature, insect density and type of SPME fibre. Twenty-three VOCs were extracted from insects in 4 mL flask at 35 ± 1°C for four hours of extraction and separated and identified with gas chromatography-mass spectroscopy. The major VOCs or chemical signals from T. castaneum were 1-pentadecene, p-Benzoquinone, 2-methyl- and p-Benzoquinone, 2-ethyl. Conclusion: This study showed that HS-SPME GC technology is a robust and cost-effective method for extraction and identification of the unique VOCs produced by T. castaneum. Therefore, this technology could lead to a new approach in the timely detection of T. castaneum and its subsequent treatment.

scholarly journals Antibacterial Activity of Some Lactic Acid Bacteria Isolated from an Algerian Dairy Product

2009 ◽  
Vol 2009 ◽  
pp. 1-6 ◽  
Author(s):  
Abdelkader Mezaini ◽  
Nour-Eddine Chihib ◽  
Abdelkader Dilmi Bouras ◽  
Naima Nedjar-Arroume ◽  
Jean Pierre Hornez
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Antibacterial Effect ◽  
Dairy Product ◽  
Streptococcus Thermophilus ◽  
Fermented Food ◽  
Bacteriocin Production ◽  
Gram Positive ◽  
Bacteria Growth ◽  
Gram Positive Bacteria

In the present study, the antibacterial effect of 20 lactic acid bacteria isolates from a traditional cheese was investigated. 6 isolates showed antibacterial effect against Gram positive bacteria.Streptococcus thermophilusT2 strain showed the wide inhibitory spectrum against the Gram positive bacteria. Growth and bacteriocin production profiles showed that the maximal bacteriocin production, byS. thermophilusT2 cells, was measured by the end of the late-log phase (90 AUml−1) with a bacteriocine production rate of 9.3 (AUml−1)h−1. In addition, our findings showed that the bacteriocin, produced byS. thermophilusT2, was stable over a wide pH range (4–8); this indicates that such bacteriocin may be useful in acidic as well as nonacidic food. This preliminarily work shows the potential application of autochthonous lactic acid bacteria to improve safety of traditional fermented food.

Biodiversity and origin of the microbial populations isolated from Masske, a traditional Iranian dairy product made from fermented Ewe's milk

2016 ◽  
Vol 69 (3) ◽  
pp. 441-451 ◽  
Author(s):  
Fariba Ghiamati ◽  
Masoud Yavarmanesh ◽  
Morteza khomeiri ◽  
Yahya Maghsoudlou
Keyword(s):  
Dairy Product ◽  
Microbial Populations ◽  
Ewe's Milk

Aroma profile and lactic acid bacteria characteristic of traditional Slovak cheese “May bryndza”

2021 ◽  
pp. 108201322110399
Author(s):  
Jana Štefániková ◽  
Július Árvay ◽  
Simona Kunová ◽  
Przemysław Łukasz Kowalczewski ◽  
Miroslava Kačániová
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Butanoic Acid ◽  
Aroma Profile ◽  
Volatile Organic ◽  
Ewe's Milk ◽  
The Impact

This paper describes the results of the characterization of a traditional Slovak cheese called “May bryndza” with regard to the profiles of volatile organic compounds and lactic acid bacteria. Samples of “May bryndza“ cheese produced solely from unpasteurized ewe's milk were collected from 4 different Slovak farms, and samples of the cheese produced from a mixture of 2 types of milk (raw ewe's and pasteurized cow's milk) were collected from 3 different Slovak industrial dairies. There were 15 compounds detected and identified by the electronic nose. The impact of the kind of milk and the kind of dairy on the aroma profile of the product was not confirmed by PCA. The compounds with the highest relative contents in samples were acetoin (2.59%–24.55%), acetic acid (6.69%–13.39%), methoxy-phenyl-oxime (4.49%–8.52%), butanoic acid (1.89%–5.67%), and 2,3-butanediol (0.98%–4.08%), which were determined with gas chromatography. A total of 1533 isolates of LAB were obtained from the “May bryndza” cheese samples. Four families, five genera, and 19 species were identified with mass spectrometry, and isolated bacteria, both from the farm and industry dairies were the most frequently found to belong to Lactococcus lactis subsp. lactis.

scholarly journals Yogurt Produced by Novel Natural Starter Cultures Improves Gut Epithelial Barrier In Vitro

2020 ◽  
Vol 8 (10) ◽  
pp. 1586 ◽  
Author(s):  
Nikola Popović ◽  
Emilija Brdarić ◽  
Jelena Đokić ◽  
Miroslav Dinić ◽  
Katarina Veljović ◽  
...  
Keyword(s):  
Dairy Product ◽  
Starter Culture ◽  
Streptococcus Thermophilus ◽  
Starter Cultures ◽  
Added Value ◽  
Lactobacillus Bulgaricus ◽  
Intestinal Epithelial ◽  
Beneficial Effects ◽  
Health Promoting

Yogurt is a traditional fermented dairy product, prepared with starter cultures containing Streptococcus thermophilus and Lactobacillus bulgaricus that has gained widespread consumer acceptance as a healthy food. It is widely accepted that yogurt cultures have been recognized as probiotics, due to their beneficial effects on human health. In this study, we have characterized technological and health-promoting properties of autochthonous strains S. thermophilus BGKMJ1-36 and L. bulgaricus BGVLJ1-21 isolated from artisanal sour milk and yogurt, respectively, in order to be used as functional yogurt starter cultures. Both BGKMJ1-36 and BGVLJ1-21 strains have the ability to form curd after five hours at 42 °C, hydrolyze αs1-, β-, and κ- casein, and to show antimicrobial activity toward Listeria monocytogenes. The strain BGKMJ1-36 produces exopolysaccharides important for rheological properties of the yogurt. The colonies of BGKMJ1-36 and BGVLJ1-21 strains that successfully survived transit of the yogurt through simulated gastrointestinal tract conditions have been tested for adhesion to intestinal epithelial Caco-2 cells. The results reveal that both strains adhere to Caco-2 cells and significantly upregulate the expression of autophagy-, tight junction proteins-, and anti-microbial peptides-related genes. Hence, both strains may be interesting for use as a novel functional starter culture for production of added-value yogurt with health-promoting properties.

scholarly journals Assessment of Growth and Technological Performances of Yogurt Bacteria Isolated From Local Turkish Yogurts

2021 ◽  
pp. 38-50
Author(s):  
Irem Uzunsoy ◽  
Sebnem Ozturkoglu Budak ◽  
Tuba Sanli ◽  
Birce Taban ◽  
Aykut Aytac ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Rural Areas ◽  
Streptococcus Thermophilus ◽  
Growth Patterns ◽  
Lactobacillus Delbrueckii ◽  
Volatile Organic ◽  
Sensory Evaluations ◽  
Commercial Applications ◽  
Lactobacillus Delbrueckii Subsp

Growth patterns and some technological performances of five Streptococcus thermophilus and seven Lactobacillus delbrueckii subsp. bulgaricus strains isolated from yogurt samples which were collected from remote rural areas of Anatolia, Turkey were assessed. The single isolates were screened for milk acidification performances, production of volatile organic compounds and texture developing properties, and selected isolates were combined to use in yogurt-making. Yogurt samples were subjected to sensory evaluations as well as fermentation profiles. Finally, the combinations of one Streptococcus thermophilus isolate with all Lactobacillus delbrueckii subsp. bulgaricus strains were found to have potentials for further evaluations regarding their suitability for commercial applications.

scholarly journals Effect of electron and X-ray irradiation on microbiological and chemical parameters of chilled turkey

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Ulyana Bliznyuk ◽  
Valentina Avdyukhina ◽  
Polina Borshchegovskaya ◽  
Timofey Bolotnik ◽  
Victoria Ipatova ◽  
...  
Keyword(s):  
Meat Products ◽  
Absorbed Dose ◽  
Chemical Parameters ◽  
X Ray ◽  
Turkey Meat ◽  
Potential Marker ◽  
Volatile Organic ◽  
Dose Ranging ◽  
Irradiated Meat ◽  
Specific Odor

AbstractThe purpose of this work was to compare the effect of electron and X-ray irradiation on microbiological content and volatile organic compounds in chilled turkey meat. Dose ranges which significantly suppress the pathogenic microflora while maintaining the organoleptic properties of the turkey meat are different for electron and X-ray irradiation. According to the study it is recommended to treat chilled turkey using X-ray irradiation with the dose ranging from 0.5 to 0.75 kGy, while in electron irradiation permissible doses should be within 0.25–1 kGy. Three main groups of volatile compounds: alcohols, ketones, and aldehydes—were found in irradiated and non-irradiated samples of turkey meat. It was found that the total amount of aldehydes, which are responsible for the formation of a specific odor of irradiated meat products, increases exponentially with the increase in the absorbed dose for both types of irradiation. It was established that acetone can be used as a potential marker of the fact of exposure of low-fat meat products to ionizing radiation.

scholarly journals Incorporation of vegetables in yoghurt as a source of dietary fibre: A review

2021 ◽  
Vol 8 (2) ◽  
pp. 008-013
Author(s):  
Faiza Iqbal ◽  
Muhammad Anees Ur Rehman ◽  
Mah Ahfaq
Keyword(s):  
Dietary Fibre ◽  
Dairy Product ◽  
Health Benefits ◽  
Milk Proteins ◽  
Streptococcus Thermophilus ◽  
Essential Amino Acids ◽  
Lactobacillus Bulgaricus ◽  
High Quality Protein ◽  
Acid Producing Bacteria ◽  
Fermented Dairy

Yoghurt is a fermented dairy product with conspicuous consumption around the world due to its pronounced health benefits. Yoghurt is defined as the food produced by culturing the milk in controlled conditions that contain lactic acid-producing bacteria (Lactobacillus bulgaricus, Streptococcus thermophilus. Consumer acceptability of Yoghurt is high due to its health benefits and sensory attributes. It provides 40% calcium and 30-45% phosphorus of daily requirement. All essential amino acids (proline and glycine) are present in Yoghurt. The biological value of milk proteins present in Yoghurt is high. It is considered a rich source of high-quality protein. Health benefits associated with Yoghurt are to improve the gastrointestinal digestion and immune system of humans. Yoghurt is enriched with proteins, carbohydrates, minerals (calcium and phosphorus), and vitamins (vitamin A, thiamine, riboflavin, niacin, folate and cobalamin). Yoghurt protein and its peptides have many physiological impacts as well as nutritional value. The only deficiency in Yoghurt is a lack of dietary fibre. The review emphasizes the addition of dietary fibre in Yoghurt to boost up its health benefits.

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