PhD Thesis Johanna Thomann © Elma Hogeboom 2026

Welcome

to the PhD defence of

Johanna Thomann

Dual modification of potato starch for food applications

 

Date:  19 May 2026

Time: 14.30h

PhD Thesis Johanna Thomann © Elma Hogeboom 2026

The story in a nutshell

About the Cover

Johanna took a sustainable cover design workshop with GreenThesis where we dove into designing a cover that would be suitable for a plastic-free book cover. We taught her to make natural inks from plant materials, such as red potato skins and onion skins, which perfectly matched her PhD research topic on potato starches. Then we focused on learning the right painting techniques to pull the design off. The result is a stunning book cover, with a very personal touch. If you would like more information on our one-on-one design workshop, feel free to contact us.

a peek behind the scenes

Sustainable book cover design workshop –

with natural inks and paints

PhD Thesis Johanna Thomann © Elma Hogeboom 2026

science meets art meets sustainability

About GreenThesis

Elma Hogeboom is a natural scientist-turned-artist with a passion for sustainability. As a designer I soon learned that many inks and paints used by artists are not so pretty in terms of their environmental performance. In fact, many art materials contain heavy metals and other toxic substances you’d rather not put on your hands or wall.

Leveraging my science background, I researched eco-friendly art alternatives. The result was a green art materials database out of which I could draw to create my works of art that are both beautiful and sustainable. 

When some years ago I designed the sustainable cover for my husband’s PhD thesis, it needed to be digitized and printed many times. Clearly, it felt only natural to have the dissertation and cover sustainably printed. But yet again I was in for a not-so-green surprise: eco-friendly printing is not common practice.

Hence I dove into my books once more and decided to found GreenThesis.nl (DuurzameDissertatie.nl). With GreenThesis, I offer PhD candidates with a green heart the option to both design and print their thesis in an eco-friendly manner. From plastic-free packaging to printing on agricultural waste, and from vegan inks to bike delivery, I can help you find a sustainable solution. 

Elma Hogeboom - Duurzaam Designer en Owner at DuurzameDissertatie.nl

SCIENCE meets ART meets SUSTAINABILITY

at GreenThesis

From sustainable Design to printing your PhD Thesis

GreenThesis

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