Acorn Isotopic Composition: A New Promising Tool for Authenticity Maps of Montado's High-Value Food Products

被引：8

作者：

Alegria, Carla ^{[1
,2
]}

Antunes, Cristina ^{[1
]}

Giovanetti, Manuela ^{[1
,3
]}

Abreu, Marta ^{[2
,4
]}

Maguas, Cristina ^{[1
]}

机构：

[1] Univ Lisbon, Fac Ciencias, cE3c Ctr Ecol Evolut & Environm Changes, P-1749016 Lisbon, Portugal

[2] Inst Nacl Invest Agr & Vet, Unidade Tecnol & Inovacao, IP Av Republ, P-2780157 Oeiras, Portugal

[3] CREA Res Ctr Agr & Environm, Via Saliceto 80, I-40128 Bologna, Italy

[4] Univ Lisbon, Inst Super Agr, LEAF Linking Landscape Environm Agr & Food, P-1349017 Lisbon, Portugal

来源：

MOLECULES | 2020年 / 25卷 / 07期

关键词：

Quercus rotundifolia; Quercus suber; physiological traits; delta N-15; aridity index; isoscapes; NET PRIMARY PRODUCTIVITY; PRECIPITATION GRADIENT; QUERCUS SPP; STABLE-ISOTOPES; IBERIAN PIGS; FATTY-ACIDS; CARBON; PLANT; SOIL; CONSERVATION;

D O I：

10.3390/molecules25071535

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

It is often overlooked that even food production is linked to the ecology of plants and animals. Living organisms respond to environmental short-and long-term variability: acknowledging this may help in the ultimate goal of valorizing a territory/product. We investigated acorns of the two main Quercus species of the Portuguese Montado, a main feed of the renown black Iberian pig. We tested their responses to an aridity gradient by morphological parameters and isotopic signature. Q. rotundifolia and Q. suber acorns did not differ morphologically, even if a higher variability in all parameters was observed in acorns of Q. suber. According to the site-specific Aridity Index, correlations are indicative to higher weight and length only in Q. suber acorns from more arid sites. As for isotopic composition, there were no differences in nitrogen or carbon (delta N-15 and delta C-13) between the two species. However, combining the samples and testing for association with the Aridity Index, we found that more arid sites lead to a N-15 enrichment. This result, combined with the positive correlation between AI and acorns length, support the use of acorns as a tool, their isoscapes of nitrogen being a stepping stone for the provenance of the black Iberian pig.

引用

页数：11