Type

Journal Article

Authors

J P Kerry
A P Moloney
D J Troy
M Maher
M N O'Grady

Subjects

Agriculture & Food Science

Topics
dietary quality modified atmosphere supplementation dietary assessment beef quality tea quality assessment beef cattle

An assessment of dietary supplementation with tea catechins and rosemary extract on the quality of fresh beef. (2005)

Abstract The effect of supplementation of beef cattle diets with tea catechins (TC) (1000mg/animal/day) and rosemary extract (RE) (1000mg/animal/day), for 103 days preceding slaughter, on the oxidative stability of M. longissimus dorsi (LD) steaks was evaluated. Dietary supplementation with TC and RE did not increase plasma total antioxidant status (TAS), LD α-tocopherol concentrations or pH. In LD steaks stored aerobically or in modified atmosphere packs (80% O(2):20% CO(2)) (MAP) for up to 8 days at 4°C, surface redness (CIE 'a' redness value) and lipid stability (TBARS, mg MDA (malondialdehyde)/kg muscle) were not significantly improved as a result of supplementation with TC and RE. Similarly no improvement in the sensory properties and lipid stability of cooked LD slices, stored aerobically or in 30% CO(2):70% N(2) for up to 11 days at 4°C, was observed. An in vitro fermentation study demonstrated that TC and RE were not fermented to any great extent under simulated rumen conditions. Direct addition of TC (1000ppm) and RE (1000ppm) significantly (P<0.05) improved the colour and lipid stability in LD patties stored in 80% O(2):20% CO(2) for up to 8 days at 4°C, thus, demonstrating the antioxidant potential of TC and RE supplements employed in the present study.
Collections Ireland -> University College Cork -> PubMed

Full list of authors on original publication

J P Kerry, A P Moloney, D J Troy, M Maher, M N O'Grady

Experts in our system

1
J P Kerry
University College Cork
Total Publications: 130
 
2
A P Moloney
Teagasc
Total Publications: 89
 
3
D J Troy
Teagasc
Total Publications: 48
 
4
M N O'Grady
University College Cork
Total Publications: 23