Protocol for Extraction and Electron Microscopy Visualization of Lipids in Viburnum tinus Fruit Using Cryo-Ultramicrotomy.

Abstract

We recently reported that Viburnum tinus fruit generates its metallic blue color using globular lipid inclusions embedded in its epicarpal cell walls. This protocol describes steps to visualize the lipidic nature of the nanostructure using cryo-ultramicrotomy, chloroform extraction, and transmission electron microscopy (TEM) imaging. This method is useful to localize and characterize novel lipidic nanostructures embedded in both plant and animal tissues at the TEM resolution. For complete details on the use and execution of this protocol, please refer to Middleton et al. (2020).

Code and data availability

This is a methods protocol paper. The authors explicitly state 'This protocol did not generate any new data or code.' The only URLs mentioned (Fiji, SerialEM) are generic third-party software tools, not paper-specific assets. Electron micrographs are attributed to Middleton et al. 2020 with no public deposit identified

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