Supra 55vp field

Filamentous ‘pink streamer' biomass was collected from OS on 12 October 2011 and fixed with 1% (final concentration) filter-sterilized glutaraldehyde. Streamer biomass was placed on a 0.22-μm filter and coated with iridium to reduce charging, and imaged with a Zeiss SUPRA 55VP field emission scanning electron microscope (Image and Chemical Analysis Laboratory, Montana State University) at low voltage (1 keV).

The fruits of Solanum betaceum (red variety) were harvested at the ripening stage in which they are consumed in Finca del Obispo, Villa Jardín de Reyes, Jujuy, Argentina, in December 2016. Skin, pulp and seeds were separated, freeze-dried and powdered. The powders were vacuum packed and stored at -20 °C. Scanning electron microscopy (SEM) of each powder was carried out. SEM of gold-coated (Fine Coat Ion Sputter JEOL JFC-1100) samples was performed by using a ZEISS SUPRA-55 VP field emission scanning electron microscope at Centro Integral de Microscopía Electrónica (CIME), CONICET-UNT. The micrographs were taken for each sample at a magnification of 10,000 and 50,000 (Figure 1).Figure 1

I) Red chilto fruit; II) (A)Seed; (B) pulp and (C) skin powder; III) Scanning electron micrographs of (A) seed powder; (B) pulp powder and (C) skin powder.

Figure 1