Pork Rib Research Articles

Heterocyclic Amine Content in Restaurant-Cooked Hamburgers, Steaks, Ribs, and Chicken

As part of a comprehensive survey of the heterocyclic amine content of foods, beef hamburgers, steaks, and pork ribs were purchased from restaurants, with cooking doneness specified. Samples were pooled by meat type, doneness, and cooking method and analyzed for heterocyclic amine content using HPLC. Results show detectable levels of heterocyclic amines in all samples, ranging from 0.5 ng/g PhIP from a pooled sample of ribs to 20 ng/g total of MeIQx and PhIP from a sample pooled of well-done charbroiled hamburgers. Grilled chicken samples from fast-food restaurant sandwiches or rotisserie-cooked chicken contained MeIQx and PhIP at combined levels of <2 ng/g. Compared to fast-food meat products from this and previous studies, restaurant products are ∼10-fold higher in heterocyclic amine content. The amounts of heterocyclic amines measured in these restaurant foods show that samples prepared for laboratory studies are representative of commonly consumed restaurant samples. Keywords: Heterocyclic amines; PhI...

Co‐trial on ESR identification and estimates of γ‐ray and electron absorbed doses given to meat and bones

SummaryA multinational co‐trial was organized to determine if electron spin resonance (ESR) spectroscopy could be used to monitor foods exposed to ionizing radiation. The bones of chicken legs, frog legs and pork rib bones were prepared and distributed as unknowns to the participating laboratories. In every instance, non‐irradiated bones were correctly identified as such. Moreover, irradiated bones were not only correctly identified, but relatively good estimates of the absorbed dose were obtained. An intercomparison of the different approaches used by each laboratory is discussed, and recommendations for future trials are presented.

SERUM SOMATOMEDIN ACITIVITY IN OBESE CHILDREN

Serum somatomedin activity (SSA) was measured by incorporation of 35 S in pork rib cartilage in 26 obese children, 9 boys and 17 girls, aged 7 to 15 years, whose weight excess ranged from 45 to 100%, and in 15 normal children of comparable ages. The SSA mean value was 0.96 in obese children, identical to that of controls (0.98), despite lower serum growth hormone levels after arginine in obese children. However, the range of individual values was wider in obese subjects. No inhibitory effect was found with low SSA obese serum on SSA of normal human serum. A significant (p<0.001) negative correlation was found between SSA and weight excess in obese children (y = −0.01 x + 1.60, r = 0.7109). These data demonstrate that 1/ SSA is normal in most obese children despite low serum growth hormone levels 2/ SSA is negatively correlated to the weight excess.