Journal of Nutrition & Food Sciences
Open Access
ISSN: 2155-9600
+32 25889658
ISSN: 2155-9600
+32 25889658
Eyram Norgbey, Jingyu Huang, Philip N Nkrumah, Gloria Appiah-Sefah and Rainizafy S Michel
Hohai University, China
Posters & Accepted Abstracts: J Nutr Food Sci
The economically motivated adulteration of milk powder in the Chinese market has increasingly become a major public concern. The study was done to ascertain the feasibility of utilizing �´2H, �´18O and �´15N stable isotope technique in elucidating the authenticity and origin of milk products on the Chinese market. Milk powder from North America, Oceania and China were analyzed. An elemental analyzer was connected to an isotope ratio mass spectrometer operated in the continuous flow mode was utilized. Statistical analysis was performed using descriptive statistics and one-way ANOVA. The study revealed that both �´2H and �´18O had a wide range of mean values: 13.86 to 22.25â�° and -82.86 to -28.5â�°, respectively. There was a significant difference in the �´2H and �´18O composition of the milk samples of (P<0.05; F=20880) and (P<0.05; F=1399.0), respectively. Both the �´2H and �´18O isotopic technique could provide a clear distinction between all the specific regions-of-origins that were evaluated except between the northern part of China (mean=21.63) and New Zealand (mean=21.62), �´18O isotopic could not discriminate. The feasibility of �´2H and �´18O is mainly based on the distinct isotopic signatures of water in different geographic localities. The range of the mean �´15N values of the samples was very close, 3.06 to 5.61%. The nitrogen stable isotope could not provide a clear distinction for most of the milk products because �´15N of an animal reflects that of the diet. Hence in cases of similar diet, it cannot provide a distinction between the animals using this technique.
Email: eyramnorgbey@outlook.com