Human dietary δ(15)N intake: representative data for principle food items.
Am J Phys Anthropol
; 152(1): 58-66, 2013 Sep.
Article
em En
| MEDLINE
| ID: mdl-23921599
Dietary analysis using δ(15)N values of human remains such as bone and hair is usually based on general principles and limited data sets. Even for modern humans, the direct ascertainment of dietary δ(15)N is difficult and laborious, due to the complexity of metabolism and nitrogen fractionation, differing dietary habits and variation of δ(15)N values of food items. The objective of this study was to summarize contemporary regional experimental and global literature data to ascertain mean representative δ(15)N values for distinct food categories. A comprehensive data set of more than 12,000 analyzed food samples was summarized from the literature. Data originated from studies dealing with (1) authenticity tracing or origin control of food items, and (2) effects of fertilization or nutrition on δ(15)N values of plants or animals. Regional German food δ(15)N values revealed no major differences compared with the mean global values derived from the literature. We found that, in contrast to other food categories, historical faunal remains of pig and poultry are significantly enriched in (15)N compared to modern samples. This difference may be due to modern industrialized breeding practices. In some food categories variations in agricultural and feeding regimens cause significant differences in δ(15)N values that may lead to misinterpretations when only limited information is available.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas Alimentares
/
Análise de Alimentos
/
Isótopos de Nitrogênio
Tipo de estudo:
Prognostic_studies
Limite:
Humans
País/Região como assunto:
America do norte
/
America do sul
/
Asia
/
Brasil
/
Europa
Idioma:
En
Revista:
Am J Phys Anthropol
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Alemanha
País de publicação:
Estados Unidos