In this study, raw milk was collected from three different grades of pastures and processed by pasteurization, blending and ultra-high temperature sterilization (UHT) in a factory production line with a feed size of 10 tons. Additionally, all samples (from raw milk to UHT milk samples) were analyzed by -nose and GC-MS. Key flavor compounds such as 2-heptanone, hexanal, nonanal, 3-methyl-butanal, and dimethyl sulfide were found. The results showed that the pastures with higher grades could help to improve the quality of milk flavor, and the heat treatment had a significant impact on the milk flavor profile. The pasteurization was effective in eliminating undesirable flavors such as hexanal (ROAV>1) resulting from the oxidation of raw milk fat, whereas the ultra-high temperature sterilization exacerbated the oxidation of milk fat that led to the massive production of ketones such as 2-heptanone (0.9 < ROAV<1.3), which contributed to undesirable milk flavors.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11719328 | PMC |
| http://dx.doi.org/10.1016/j.fochx.2024.102083 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Exploration of milk flavor: From the perspective of raw milk, pasteurized milk, and UHT milk.
Food Chem X
January 2025
Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing 100048, PR China.
In this study, raw milk was collected from three different grades of pastures and processed by pasteurization, blending and ultra-high temperature sterilization (UHT) in a factory production line with a feed size of 10 tons. Additionally, all samples (from raw milk to UHT milk samples) were analyzed by -nose and GC-MS. Key flavor compounds such as 2-heptanone, hexanal, nonanal, 3-methyl-butanal, and dimethyl sulfide were found.
View Article and Find Full Text PDFUltra-high performance liquid chromatography ion mobility-high-resolution mass spectrometry for the assessment of raw milk traceability.
Food Chem
January 2025
University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
The complexity of modern food supply chains limits the effectiveness of targeted approaches to address food traceability issues. Untargeted metabolomics provides a comprehensive profile of small molecules present within biological samples. In this study, the potential of ultra-high performance liquid chromatography-ion mobility-high resolution mass spectrometry (UHPLC-IMS-HRMS) to discriminate bovine milk samples collected at individual level was evaluated for traceability purposes.
View Article and Find Full Text PDFHuman Brucellosis in the Rural and Urban Population of Pakistan: Seroprevalence, Risk Factors, and Clinical Manifestations.
Curr Microbiol
January 2025
Razi Vaccine and Serum Research Institute (RVSRI), Agricultural Research, Education and Organization (AREEO), Karaj, Iran.
Brucella spp. is the bacterium responsible for brucellosis, a zoonotic infection that affects humans. This disease poses significant health challenges and contributes to poverty, particularly in developing countries.
View Article and Find Full Text PDFInfluence of Heat- and Cold-Stressed Raw Milk on the Stability of UHT Milk.
Foods
December 2024
Key Laboratory of Dairy Science, Ministry of Education, Department of Food Science, Northeast Agricultural University, Harbin 150030, China.
This study investigated the variations and alterations in the concentrations of plasmin system components in raw and UHT (ultra-high-temperature) milk under cold stress (WCT ≤ -25 °C), heat stress (THI ≥ 80), and normal (THI < 70 and WCT ≥ -10 °C) circumstances. The findings indicated elevated amounts of plasmin system components in cold-stressed raw milk. While storing UHT milk at 25 °C, the concentrations and activity of plasmin in the milk exhibited an initial increase followed by a decrease, peaking around the 30th day.
View Article and Find Full Text PDFSeroepidemiology, molecular detection, and isolation attempts of Toxoplasma gondii in dairy goats from Rio de Janeiro, Brazil.
Vet Res Commun
January 2025
Laboratório de Protozoologia, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, RJ, Brasil.
Goats are the one of the most susceptible domestic species to toxoplasmosis affecting animal health and production. The present study aimed to determine the seroprevalence of T. gondii infection in dairy goats from Rio de Janeiro, Brazil, as well as to evaluate associated risk factors, parasitic DNA detection in raw goat milk samples, and attempts to isolate the parasite from raw goat milk samples.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!