Circannual changes in major chemical composition of bulk dromedary camel milk as determined by FT-MIR spectroscopy, and factors of variation
| Autor: | László Varga, Judit Juhász, Peter D. Nagy, Gábor Császár, Róbert Kocsis, Jenő Reiczigel |
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| Rok vydání: | 2019 |
| Předmět: |
Camelus
Dromedary camel Photoperiod 01 natural sciences Analytical Chemistry 0404 agricultural biotechnology Animal science Spectroscopy Fourier Transform Infrared medicine Animals Spectroscopy Chemical composition Chemistry 010401 analytical chemistry Temperature 04 agricultural and veterinary sciences General Medicine Raw milk Seasonality medicine.disease 040401 food science 0104 chemical sciences Milk Female Seasons Food Science |
| Zdroj: | Food Chemistry. 278:248-253 |
| ISSN: | 0308-8146 |
| DOI: | 10.1016/j.foodchem.2018.11.059 |
| Popis: | We monitored the major chemical composition of bulk dromedary camel milk by FT-MIR spectroscopy over a 5-year period. The results highly correlated with those determined with reference methods (r 0.985, p 0.001). Production parameters showed significant (p 0.001) seasonal and yearly changes. The overall mean fat, protein, lactose, solids-not-fat, and total solids concentrations of bulk dromedary camel milk were 2.87%, 2.94%, 4.15%, 8.00%, and 10.69%, respectively. Month of the year, year of the study, and level of production had a strong influence on bulk milk chemical composition and yield of milk components; however, the relative effect of season on composition was greater (proportion of variance app. 50%) compared to that of other factors of variation. The highest and lowest values were measured during winter and summer, respectively. Circannual variation in major milk components was associated with environmental conditions (photoperiod, temperature), whereas it was independent of nutritional factors. |
| Databáze: | OpenAIRE |
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