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Collection and Identification of Pollen from Honey Bee Colonies
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Protocol for optimal quality and quantity pollen DNA isolation from honey samples.

Ralte Lalhmangaihi1, Souvik Ghatak2, Ramachandra Laha1

  • 1Departments of Botany.

Journal of Biomolecular Techniques : JBT
|November 4, 2014
PubMed
Summary

This study presents an optimized DNA isolation method for honey, enabling plant species identification from small samples using PCR. The validated technique efficiently extracts DNA, even from just 3 ml of honey.

Keywords:
beeschloroplast DNApolliniferous plants

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Area of Science:

  • Molecular Biology
  • Forensic Science
  • Food Science

Background:

  • Accurate identification of plant species in honey is crucial for quality control and authenticity verification.
  • Existing DNA isolation methods often require larger sample volumes and may struggle with the complex matrix of honey.
  • Characterizing botanical origin through DNA analysis can provide valuable insights into honey's geographical and floral sources.

Purpose of the Study:

  • To develop and validate an optimized, efficient DNA isolation protocol for analyzing low-volume honey samples.
  • To enable the identification of plant species present in honey using a conventional Polymerase Chain Reaction (PCR)-based approach.
  • To refine sample preparation for improved DNA yield and quality from honey.

Main Methods:

  • An optimized sample preparation method was developed, utilizing an anionic detergent to lyse pollen shells and dithiothreitol (DTT) for thiolated DNA isolation.
  • The method involved optimizing honey sample quantity and DNA isolation time.
  • Conventional PCR amplification and sequencing were employed for DNA analysis.

Main Results:

  • Successful DNA isolation from as little as 3 ml of honey was achieved.
  • The optimized protocol demonstrated efficiency in releasing DNA by aiding protein digestion and reducing cross-links.
  • Chloroplast DNA was successfully PCR amplified and sequenced from the isolated honey DNA samples, confirming the method's efficacy.

Conclusions:

  • The developed DNA isolation method is efficient and effective for analyzing low quantities of honey.
  • This technique allows for the reliable characterization of plant species in honey, supporting authenticity and quality assessments.
  • The optimized protocol offers a valuable tool for melissopalynology and forensic applications involving honey analysis.