Can stable isotope analysis reveal dietary differences among groups with distinct income levels in the city of Piracicaba (southeast region, Brazil)?

Abstract

The combination of household purchase surveys and stable isotopic composition in modern humans is found to be a valuable tool, especially with respect to determining the role of C3 and C4 plants through the complex modern food chain.

Evaluation of childhood nutrition by dietary survey and stable isotope analyses of hair and breath

“…Previous studies have shown that the stable isotopes of hair can be used to distinguish among Europeans with omnivorous, ovo‐lacto‐vegetarian, or vegan diets (Bol & Pflieger, ; Petzke, Boeing, Klaus, et al, ; Petzke, Boeing, & Metges, ; Petzke et al, ). However, these biomarkers have rarely been applied in large populations (Bender et al, ; Gragnani, Garavello, Silva, Nardoto, & Martinelli, ; Kusaka et al, ; Thompson et al, ; Valenzuela, Chesson, Bowen, Cerling, & Ehleringer, ; Valenzuela et al, ) or in the context of nutritional epidemiology (Bender et al, ; O'Brien, ; Petzke et al, ). While isotopic analysis of hair provides a time‐integrated dietary signal, isotopic analysis of breath CO 2 provides a measure of recent carbohydrate metabolism (O'Brien, ).…”

Effect of baking and fermentation on the stable carbon and nitrogen isotope ratios of grain‐based food

“…Knowledge of the stable isotope composition of food sources allows scientists to make numerous distinctions concerning the dietary patterns of animals and humans. Based on the premise that isotopic signatures of foods are transferred to consumer's tissues upon ingestion and assimilation, stable isotope analysis (SIA) of bodily tissues can be used in paleo and modern human diet reconstruction to determine variations in food consumption patterns along regional and socioeconomic lines . For instance, analysis of the stable isotope ratio of nitrogen (δ 15 N value) is used to determine meat intake of individuals and populations due to the elevated δ 15 N values of animal foods, while analysis of the stable isotope ratio of carbon (δ 13 C value) can be used to determine dietary introduction of agriculturally important C4 grasses due to their distinct isotope signatures .…”

“…Based on the premise that isotopic signatures of foods are transferred to consumer's tissues upon ingestion and assimilation, stable isotope analysis (SIA) of bodily tissues can be used in paleo and modern human diet reconstruction to determine variations in food consumption patterns along regional and socioeconomic lines. [1][2][3][4][5][6][7] For instance, analysis of the stable isotope ratio of nitrogen (δ 15 N value) is used to determine meat intake of individuals and populations due to the elevated δ 15 N values of animal foods, [8][9][10] while analysis of the stable isotope ratio of carbon (δ 13 C value) can be used to determine dietary introduction of agriculturally important C4 grasses due to their distinct isotope signatures. [11] Recent developments involve the use of stable isotopes as intake biomarkers of specific foods relevant to public health research, including fish [12,13] and added sugars [14][15][16][17][18] (See Jahren et al [19] for a review of the added sugar biomarker).…”

“…Numerous prior studies have estimated whole-diet isotope signatures of individuals and populations from self-reported dietary intake data [4,6,7,[28][29][30] or controlled feeding trials. [31][32][33] In order to derive representative whole-diet signatures, researchers need to know the isotopic composition of all foods consumed by the individual/population.…”

Transição agroalimentar em comunidades tradicionais rurais: o caso dos remanescentes de quilombo Kalunga – GO

“…Além disso, foram feitas perguntas quanto ao nível de renda, benefícios sociais recebidos, condições de moradia e saneamento, dentre outras, com o objetivo de traçar o perfil socioeconômico local. Uma vez que o objetivo do presente estudo é ecológico, relacionado ao modo de uso dos recursos de subsistência, principalmente, e não nutricional, destacase que a presente metodologia se fundamenta principalmente em Nardoto et al [9] e Grangnani et al [26] .Por meio dos dados levantados foram realizadas análises gráficas e tabulares para avaliação do padrão e frequência de consumo de determinados itens alimentares por comunidade. Além disso, foi possível realizar avaliações gráficas sobre os itens consumidos e produzidos localmente de acordo com as categorias de acesso ao meio urbano, ou seja, comunidades acessíveis e remotas do Sítio Histórico e Patrimônio Cultural Kalunga.…”