Related Experiment Video
Updated: Apr 1, 2026

Identification of Rare Bacterial Pathogens by 16S rRNA Gene Sequencing and MALDI-TOF MS
Published on: July 11, 2016
MALDI-TOF MS Classification of Formosan Thraustochytrids and Their Use in Shrimp Farming
Setya Widi Ayuning Permanasari1,2, Hsiu-Chin Lin1, Jia-Ying Lin1
1Department of Marine Biotechnology and Resources, National Sun Yat-sen University, 70, Lien-Hai Rd., Kaohsiung 80424, Taiwan.
Marine thraustochytrids offer sustainable sources of omega-3s and astaxanthin. Integrated classification methods identified strains that improve shrimp aquaculture, boosting survival, growth, and feed conversion.
Area of Science:
- Marine microbiology
- Biotechnology
- Aquaculture nutrition
Background:
- Thraustochytrids are marine protists valuable for producing omega-3 polyunsaturated fatty acids (PUFAs) like docosahexaenoic acid (DHA) and carotenoids such as astaxanthin.
- Sustainable aquaculture requires efficient methods for identifying and utilizing these high-value bioactive compounds.
Purpose of the Study:
- To establish a MALDI-TOF MS Biotyper database for Formosan thraustochytrid strains.
- To enhance taxonomic resolution and functionally group strains using biochemical traits.
- To select and evaluate thraustochytrid strains for improving shrimp (Litopenaeus vannamei) aquaculture.
Main Methods:
- MALDI-TOF MS Biotyper database creation and comparison with 18S rRNA gene phylogeny.
- Principal Component Analysis (PCA) and K-means clustering of biochemical data.
- High-Performance Liquid Chromatography (HPLC) for quantifying DHA and astaxanthin yields.
- Aquaculture trials with selected thraustochytrid strains (Schizochytrium sp. W1.2 and Aurantiochytrium sp. YA7.1).
Main Results:
- MALDI-TOF MS Biotyper provided higher taxonomic resolution than 18S rRNA gene analysis.
- Integrated classification enabled effective functional grouping of thraustochytrid strains based on bioactive yields.
- DHA-rich strain W1.2 improved postlarval survival and growth in shrimp.
- Astaxanthin-rich strain YA7.1 enhanced feed conversion and adult size in shrimp.
Conclusions:
- Integrated proteomic and biochemical classification is effective for selecting thraustochytrid strains for specific applications.
- Thraustochytrids offer dual benefits in microbial taxonomy and functional nutrition for sustainable aquaculture.
- Selected thraustochytrid strains can significantly enhance shrimp aquaculture performance.
More Related Videos
09:38Dithranol as a Matrix for Matrix Assisted Laser Desorption/Ionization Imaging on a Fourier Transform Ion Cyclotron Resonance Mass Spectrometer
Published on: November 26, 2013
09:18Profiling the Triacylglyceride Contents in Bat Integumentary Lipids by Preparative Thin Layer Chromatography and MALDI-TOF Mass Spectrometry
Published on: September 5, 2013
Related Concept Videos
MALDI-TOF Mass Spectrometry
Peptide Identification Using Tandem Mass Spectrometry
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...