Oxidative instability of CLA concentrate and its avoidance with antioxidants

Junsoo Lee, Seon Mi Lee, In-Hwan Kim, Jae Hong Jeong, Chul Rhee, Kwang Won Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This study evaluated the effectiveness of antioxidants, such as BHA, BHT, TBHQ, propyl gallate (PG), α-tocopherol (α-T), green tea extract (GTE), and rosemary extract (RE) on oxidative stability of CLA concentrate. Stability of CLA concentrate stored in air at 45°C up to 44 d was assessed by PV. During the storage period, the PV of the control CLA concentrate sample increased from 0.20 (fresh oil) to 1654 meq/kg (oxidized oil). On the other hand, the PV for CLA concentrates treated with 200 ppm of the single synthetic antioxidants, BHA, BHT, TBHQ, and PG, increased from 0.20 to 81, 107, 78, and 101 meq/kg, respectively. Also, the PV of CLA concentrate with the addition of 200 ppm single natural antioxidants α-T, GTE, and RE lowered the final PV to 122, 140, and 110 meq/kg, respectively. Under our experimental conditions, the protective effect of 200 ppm antioxidant was in the order of TBHQ > BHA > PG > BHT > RE > α-T > GTE. These results suggest that the appropriate use of antioxidants prolongs the oxidative stability of CLA concentrate.

Original languageEnglish
Pages (from-to)807-810
Number of pages4
JournalJAOCS, Journal of the American Oil Chemists' Society
Volume80
Issue number8
Publication statusPublished - 2003 Aug 1

Fingerprint

Antioxidants
Propyl Gallate
Butylated Hydroxyanisole
concentrates
Butylated Hydroxytoluene
propyl gallate
antioxidants
Tea
rosemary
extracts
green tea
oxidative stability
Oils
Tocopherols
oils
tocopherols
Air
protective effect
storage time
air

Keywords

  • α-tocopherol
  • BHA
  • BHT
  • CLA
  • Green tea extract
  • Propyl gallate
  • Rosemary extract
  • TBHQ

ASJC Scopus subject areas

  • Food Science
  • Chemistry (miscellaneous)

Cite this

Oxidative instability of CLA concentrate and its avoidance with antioxidants. / Lee, Junsoo; Lee, Seon Mi; Kim, In-Hwan; Jeong, Jae Hong; Rhee, Chul; Lee, Kwang Won.

In: JAOCS, Journal of the American Oil Chemists' Society, Vol. 80, No. 8, 01.08.2003, p. 807-810.

Research output: Contribution to journalArticle

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