Related Experiment Video

Updated: Jan 20, 2026

An Alternative to the Traditional Cold Pressor Test: The Cold Pressor Arm Wrap
09:16

An Alternative to the Traditional Cold Pressor Test: The Cold Pressor Arm Wrap

Published on: January 16, 2014

14.9K

Metabolites analysis for cold-resistant yeast (Wickerhamomyces anomalus) strains own antioxidant activity on cold

Lina Xu1, Weidan Guo1, Weicong Liu1

  • 1College of Food Science and Engineering, Central South University of forestry and Technology, Changsha 410004, China.

Food Chemistry
|August 25, 2019
PubMed

Insights

Cold-resistant Wickerhamomyces anomalus yeast strains show significant antioxidant activity, effectively inhibiting lipid oxidation in cold-stored fish mince. These yeasts are potential natural bio-preservatives for muscle products.

Area of Science:

  • Food Microbiology
  • Biochemistry
  • Food Preservation

Background:

  • Lipid oxidation is a major challenge in cold-stored muscle products, leading to quality degradation.
  • Cold-resistant yeasts offer potential as natural bio-preservatives to mitigate oxidative damage.

Purpose of the Study:

  • To investigate the efficacy of cold-resistant Wickerhamomyces anomalus strains in inhibiting lipid oxidation in cold-stored fish mince.
  • To identify key metabolites responsible for the antioxidant activity of these yeast strains.

Main Methods:

  • Evaluation of eight Wickerhamomyces anomalus strains (J3, J7, J8, J9, J12, J15, J18, J25) on fish mince stored at 4°C.
  • Quantification of hydroperoxides value and thiobarbituric acid reactive substances (TBARS).
  • Metabolite profiling using gas chromatography-mass spectrometry (GC-MS).

Main Results:

  • Selected yeast strains significantly inhibited hydroperoxides and TBARS formation (p < 0.05).
  • Inhibitory efficacy correlated positively with isolongifolene, xylitol, turanose, thymol-glucoside, and uridine content.
  • Aldehyde dehydrogenase activity was linked to TBARS reduction.
  • Bacteriostatic compounds like thymol-glucoside and 2-phenylethanol were identified.

Conclusions:

  • Cold-resistant W. anomalus strains possess potent antioxidant properties.
  • Specific metabolites contribute to the observed inhibition of lipid oxidation.
  • These yeast strains represent promising candidates for novel bio-preservatives in muscle food products.
Keywords:
2-phenylethanol (PubChem CID: 6054)Allose (PubChem CID: 439507)AntioxidantArabinose (PubChem CID: 5460291)Bio-preservativeCedrol (PubChem CID: 65575)Cold-resistantDulcitol (PubChem CID: 11850)Erythritol (PubChem CID: 222285)Glycerol (PubChem CID: 753)Isolongifolene (PubChem CID: 11127402)Lipid oxidationMannobiose (PubChem CID: 152109)MetaboliteThreose (PubChem CID: 439665)Thymol-glucoside (PubChem CID: 88687)Turanose(PubChem CID: 5460935)Wickerhamomyces anomalusXylitol (PubChem CID: 6912)ridine(PubChem CID: 6029)

More Related Videos

Liver Cold Storage and Transplantation in the Cold-Adaptive Daurian Ground Squirrels08:37

Liver Cold Storage and Transplantation in the Cold-Adaptive Daurian Ground Squirrels

Published on: July 3, 2025

749
Novel Assay for Cold Nociception in Drosophila Larvae06:52

Novel Assay for Cold Nociception in Drosophila Larvae

Published on: April 3, 2017

8.1K

Related Concept Videos

Responses to Heat and Cold Stress02:45

Responses to Heat and Cold Stress

Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
14.7K
Cold Weather Concreting01:27

Cold Weather Concreting

When freshly poured concrete is exposed to freezing temperatures before it has set, the water within the concrete can freeze. This expansion disrupts the setting process, delays chemical reactions necessary for hardening, and increases the volume of pores within the hardened concrete, which weakens its overall structure. If the concrete manages to reach an appreciable strength before it freezes, the damage can be somewhat mitigated.
To counteract the negative impacts of cold weather, ensuring...
368
Masonry in Cold and Hot Weather Conditions01:21

Masonry in Cold and Hot Weather Conditions

In cold weather, masonry construction requires specific precautions to ensure mortar does not freeze before curing, as this can significantly weaken its strength and watertightness. Mortar temperature should be maintained between 60°F and 80°F to support proper hydration and curing. Below 40°F, mortar water must be heated, but should not exceed 120°F as high temperatures can reduce mortar's compressive and bond strength.
Other key practices include keeping masonry units...
336
Three-Dimensional Analysis of Strain01:29

Three-Dimensional Analysis of Strain

Three-dimensional strain analysis is crucial for understanding how materials deform under stress, particularly in elastic, homogeneous materials. This method employs principal stress axes to simplify complex stress states into more understandable forms. Subjected to stress, a small cubic element within a material either expands or contracts along these axes, transforming into a rectangular parallelepiped. This transformation effectively illustrates the material's deformation. The principal...
597
Osmoregulation in Fishes02:32

Osmoregulation in Fishes

When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
52.8K
Yeast Signaling01:28

Yeast Signaling

Yeasts are single-celled organisms, but unlike bacteria, they are eukaryotes (cells with a nucleus). Cell signaling in yeast is similar to signaling in other eukaryotic cells. A ligand, such as a protein or a small molecule released from a yeast cell, attaches to a receptor on the cell surface. The binding stimulates second-messenger kinases to activate or inactivate transcription factors that further regulate gene expression. Many of the yeast intracellular signaling cascades have similar...
17.2K