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Improvement of tea leaves fermentation through pectinases
1Himachal Pradesh University, Deparment of Biotechnology, Summer Hill, Shimla, India.
Acta Microbiologica Et Immunologica Hungarica
|September 18, 2012
Summary
Pectinase enzymes from Aspergillus niger and Mucor circinelloides significantly improved tea quality by increasing phenolic compounds. Mucor circinelloides polygalacturonase (PGase) was most effective in enhancing tea fermentation.
Area of Science:
- Enzymology
- Food Science
- Plant Biochemistry
Background:
- Tea fermentation is a crucial step influencing the quality of Camellia sinensis.
- Pectinase enzymes play a role in plant cell wall degradation and can impact fermentation processes.
- Specific pectinases from microbial sources are being investigated for their potential to enhance tea quality.
Purpose of the Study:
- To evaluate the efficacy of pectinase enzymes from Aspergillus niger, Byssochlamys fulva, and Mucor circinelloides in improving tea fermentation.
- To determine the impact of these enzymes on the phenolic compound content and overall quality of tea leaves.
- To identify the most effective pectinase for enhancing tea fermentation.
Main Methods:
- Isolation and partial purification of pectinase enzymes from Aspergillus niger, Byssochlamys fulva, and Mucor circinelloides.
- Treatment of Camellia sinensis tea leaves with the isolated pectinase enzymes.
- Quantification of phenolic compounds in treated tea leaves.
- Sensory evaluation or chemical analysis to assess tea quality improvements.
Main Results:
- Partially purified pectinases from Aspergillus niger and Mucor circinelloides significantly increased phenolic compounds (p < 0.001), enhancing tea quality.
- Partially purified polygalacturonase (PGase) from Mucor circinelloides yielded the maximum increase in phenolic compounds.
- Pectin lyase from Byssochlamys fulva showed minimal impact on tea quality improvement.
Conclusions:
- Pectinase enzymes, particularly polygalacturonase from Mucor circinelloides, are effective in improving tea fermentation and quality.
- The increase in phenolic compounds mediated by specific pectinases contributes to enhanced tea characteristics.
- Enzymatic treatment offers a promising avenue for optimizing tea processing and quality control.
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