Intra-muscular and inter-muscular variation in carbon turnover of ovine muscles as recorded by stable isotope ratios

Sabine M. Harrison, Frank J. Monahan, Aidan P. Moloney, Simon D. Kelly, Fionnuala Cuffe, Jurian Hoogewerff, Olaf Schmidt

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

In the case of muscle-based foods, the incorporation of dietary isotopic signals into muscle tissue is a dynamic process and it is not known whether all muscles, or locations within a muscle, have the same isotopic composition. Therefore, an experiment was conducted in which 28 lambs were switched from a control diet to an isotopically distinct experimental diet offered at two different energy allowances (EA). Small, albeit significant, differences were detected in tissue carbon (C) turnover within the muscle Longissimus dorsi. Inter-muscular comparison showed similar C half-lives for four of the five analysed muscles. The results also clearly demonstrated that the EA had a significant impact on intra- and inter-muscular C turnover. The findings of similar tissue C turnover of several muscles sold as meats and the comparable tissue-diet fractionation of the analysed muscles (both within the same EA) will enable scientists to analyse different meat samples according to availability without introducing large biases. However, EA must be considered a factor of uncertainty.

Original languageEnglish
Pages (from-to)203-209
Number of pages7
JournalFood Chemistry
Volume123
Issue number2
DOIs
Publication statusPublished - 15 Nov 2010
Externally publishedYes

Fingerprint

Isotopes
stable isotopes
Muscle
Sheep
Carbon
sheep
Muscles
muscles
carbon
Nutrition
Tissue
energy
Meats
Diet
Meat
meat
uncertainty analysis
muscle tissues
longissimus muscle
diet

Cite this

Harrison, Sabine M. ; Monahan, Frank J. ; Moloney, Aidan P. ; Kelly, Simon D. ; Cuffe, Fionnuala ; Hoogewerff, Jurian ; Schmidt, Olaf. / Intra-muscular and inter-muscular variation in carbon turnover of ovine muscles as recorded by stable isotope ratios. In: Food Chemistry. 2010 ; Vol. 123, No. 2. pp. 203-209.
@article{b1efc173120c4648b5a5c4c236591aca,
title = "Intra-muscular and inter-muscular variation in carbon turnover of ovine muscles as recorded by stable isotope ratios",
abstract = "In the case of muscle-based foods, the incorporation of dietary isotopic signals into muscle tissue is a dynamic process and it is not known whether all muscles, or locations within a muscle, have the same isotopic composition. Therefore, an experiment was conducted in which 28 lambs were switched from a control diet to an isotopically distinct experimental diet offered at two different energy allowances (EA). Small, albeit significant, differences were detected in tissue carbon (C) turnover within the muscle Longissimus dorsi. Inter-muscular comparison showed similar C half-lives for four of the five analysed muscles. The results also clearly demonstrated that the EA had a significant impact on intra- and inter-muscular C turnover. The findings of similar tissue C turnover of several muscles sold as meats and the comparable tissue-diet fractionation of the analysed muscles (both within the same EA) will enable scientists to analyse different meat samples according to availability without introducing large biases. However, EA must be considered a factor of uncertainty.",
keywords = "Authenticity, Carbon, Diet-switch, Inter-muscular variation, Intra-muscular variation, IRMS, Lamb, Muscle turnover, Stable isotopes, Traceability",
author = "Harrison, {Sabine M.} and Monahan, {Frank J.} and Moloney, {Aidan P.} and Kelly, {Simon D.} and Fionnuala Cuffe and Jurian Hoogewerff and Olaf Schmidt",
year = "2010",
month = "11",
day = "15",
doi = "10.1016/j.foodchem.2010.04.032",
language = "English",
volume = "123",
pages = "203--209",
journal = "Journal of Micronutrient Analysis",
issn = "0308-8146",
publisher = "Elsevier Limited",
number = "2",

}

Intra-muscular and inter-muscular variation in carbon turnover of ovine muscles as recorded by stable isotope ratios. / Harrison, Sabine M.; Monahan, Frank J.; Moloney, Aidan P.; Kelly, Simon D.; Cuffe, Fionnuala; Hoogewerff, Jurian; Schmidt, Olaf.

In: Food Chemistry, Vol. 123, No. 2, 15.11.2010, p. 203-209.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Intra-muscular and inter-muscular variation in carbon turnover of ovine muscles as recorded by stable isotope ratios

AU - Harrison, Sabine M.

AU - Monahan, Frank J.

AU - Moloney, Aidan P.

AU - Kelly, Simon D.

AU - Cuffe, Fionnuala

AU - Hoogewerff, Jurian

AU - Schmidt, Olaf

PY - 2010/11/15

Y1 - 2010/11/15

N2 - In the case of muscle-based foods, the incorporation of dietary isotopic signals into muscle tissue is a dynamic process and it is not known whether all muscles, or locations within a muscle, have the same isotopic composition. Therefore, an experiment was conducted in which 28 lambs were switched from a control diet to an isotopically distinct experimental diet offered at two different energy allowances (EA). Small, albeit significant, differences were detected in tissue carbon (C) turnover within the muscle Longissimus dorsi. Inter-muscular comparison showed similar C half-lives for four of the five analysed muscles. The results also clearly demonstrated that the EA had a significant impact on intra- and inter-muscular C turnover. The findings of similar tissue C turnover of several muscles sold as meats and the comparable tissue-diet fractionation of the analysed muscles (both within the same EA) will enable scientists to analyse different meat samples according to availability without introducing large biases. However, EA must be considered a factor of uncertainty.

AB - In the case of muscle-based foods, the incorporation of dietary isotopic signals into muscle tissue is a dynamic process and it is not known whether all muscles, or locations within a muscle, have the same isotopic composition. Therefore, an experiment was conducted in which 28 lambs were switched from a control diet to an isotopically distinct experimental diet offered at two different energy allowances (EA). Small, albeit significant, differences were detected in tissue carbon (C) turnover within the muscle Longissimus dorsi. Inter-muscular comparison showed similar C half-lives for four of the five analysed muscles. The results also clearly demonstrated that the EA had a significant impact on intra- and inter-muscular C turnover. The findings of similar tissue C turnover of several muscles sold as meats and the comparable tissue-diet fractionation of the analysed muscles (both within the same EA) will enable scientists to analyse different meat samples according to availability without introducing large biases. However, EA must be considered a factor of uncertainty.

KW - Authenticity

KW - Carbon

KW - Diet-switch

KW - Inter-muscular variation

KW - Intra-muscular variation

KW - IRMS

KW - Lamb

KW - Muscle turnover

KW - Stable isotopes

KW - Traceability

UR - http://www.scopus.com/inward/record.url?scp=77953476505&partnerID=8YFLogxK

U2 - 10.1016/j.foodchem.2010.04.032

DO - 10.1016/j.foodchem.2010.04.032

M3 - Article

VL - 123

SP - 203

EP - 209

JO - Journal of Micronutrient Analysis

JF - Journal of Micronutrient Analysis

SN - 0308-8146

IS - 2

ER -