Incorporation of Green Tea Extract and Partial Replacement of Fat to Modify the Quality and Lipid Oxidative Stability of Reduced-Fat Pork Sausage

doi:10.7506/spkx1002-6630-20200106-070

FOOD SCIENCE ›› 2021, Vol. 42 ›› Issue (4): 94-99.doi: 10.7506/spkx1002-6630-20200106-070

• Food Chemistry • Previous Articles Next Articles

Incorporation of Green Tea Extract and Partial Replacement of Fat to Modify the Quality and Lipid Oxidative Stability of Reduced-Fat Pork Sausage

CAO Yungang, LI Ying, GUO Anqi, XIONG Youling

(1. Natural Food Macromolecule Research Center, School of Food and Biological Engineering, Shaanxi University of Science & Technology, Xi’an 710021, China; 2. State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; 3. Department of Animal and Food Sciences, University of Kentucky, Lexington 40546, USA)

Online:2021-02-25 Published:2021-02-25

Abstract

Abstract: Reduced-fat sausages were manufactured with 50% substitution of pork back-fat by either unpre-emulsified or pre-emulsified commercial canola oil combined with green tea extract (100 and 1 000 mg/kg). Textural properties and lipid oxidative stability (expressed as thiobarbituric acid reactive substances value) of cooked products were analyzed. The partial replacement of animal fat with vegetable oil did not compromise the color (lightness and redness), hardness or deformability, and significantly improved oxidative stability (P < 0.05). However, the oil substitution aggravated cooking loss and markedly decreased the breaking force. Pre-emulsification alleviated the texture deterioration induced by fat replacement. Addition of green tea extract, independent of dosage, almost completely inhibited lipid oxidation in sausages during storage. However, green tea extract at 1 000 mg/kg tended to disrupt the texture properties, although no statistically significant difference (P > 0.05) was observed.

Key words: reduced-fat sausages; color; cooking loss; texture; lipid oxidation

CLC Number:

TS251.6

CAO Yungang, LI Ying, GUO Anqi, XIONG Youling. Incorporation of Green Tea Extract and Partial Replacement of Fat to Modify the Quality and Lipid Oxidative Stability of Reduced-Fat Pork Sausage[J]. FOOD SCIENCE, 2021, 42(4): 94-99.

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Incorporation of Green Tea Extract and Partial Replacement of Fat to Modify the Quality and Lipid Oxidative Stability of Reduced-Fat Pork Sausage

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