Archivos Latinoamericanos de Nutrición (Dec 2000)
Análisis comparativo proximal y de minerales entre carnes de iguana, pollo y res
Abstract
Se estudió la composición proximal (g/ 100g) y el contenido de algunos minerales (mg/100g) en carne cruda de especies diferentes (n = 20/especie). La carne de iguana (Iguana iguana) se obtuvo de ejemplares enteros capturados en finca. Muslos y pechugas, exentos de piel, conformaron las muestras de carne de pollo, mientras que bistés de longissimus dorsi de reses bovinas de varios tipos raciales, representaron la carne de vacuno. Se utilizó un diseño completamente al azar, siendo la especie la única fuente de variación. Los resultados del análisis de varianza por cuadrados mínimos, indicaron que la especie afectó significativamente todas las variables estudiadas (p Comparative proximate and mineral analysis of iguana, poultry and beef meats. Raw meat samples from iguana, poultry and beef cattle specimens were used to compare proximal (g/100g) and mineral (mg/100g) composition. Iguana meat was obtained by dissecting whole specimens (Iguana iguana) captured at a ranch (n=20). Thighs and breasts were separated from broiler (either chilled or frozen) carcasses (n=20), and deboned to represent chicken meat samples, whereas 2.5-cm-thick longissimus (ribeyes) steaks were removed from carcasses and frozen to represent beef of several breed types (n=20). The one-way analysis of variance performed by the least squares method (LS Means) showed specie affected significantly (p>0.05) all composition variables under study. Moisture content did not differ between iguana and chicken meats (74.7 y 74.9%, respectively) whereas beef samples had the lowest water content (73%) (p< 0.01). LS means for protein content showed beef samples (22.3%) were highest (p<0.05) in this nutrient, iguana meat being intermediate (20.8%). Chicken meat presented the highest amount of total lipids (7.75 ±0.20 g/100g) (p<0.01) followed by iguana (3.49 ± 0.12 g/100g)and beef (2.57 ± 0.20 g/100g). Ash and most individual minerals were more concentrated in iguana meat, except for K and Zn that were more abundant in beef samples. Non-significant differences in Mg, Na, Cu or Mn contents were detected between chicken and beef samples. It was concluded that iguana meat could be an alternate source of protein and minerals as compared to those of traditional meat species.
