About us

Green Serendipity

We have to fundamentally rethink the way we make, use and re-use plastics.

Green Serendipity is an agile consultancy for advice on sustainably produced circular and renewable materials, like bioplastics and recyclates. We initiate innovative circular concepts and are well known for the transition from linear fossil based products and packaging to circular alternatives. As an international team of experts, we connect supply and demand and because we are completely independent we can advise without any conflict of interest.

Green Serendipity provides services as biobased and recyclate material expertise, sustainable packaging expertise, sustainable product development, material chain expertise, matchmaking and innovative circular concept development.

Our clients are brand owners, retailers, SMEs, multi nationals, start ups, government, knowledge institutes, R&D centers, the complete supply chain for packaging, products and material development, communication and media agencies, investment agencies, bankers.

Also available as experts for presentations, workshops, guest lectures, conferences or meetings concerning the themes of renewable materials, sustainable development and circular concepts.

Skype consultancy is possible.

Our team

Caroli Buitenhuis

The driving force behind Green Serendipity is Caroli Buitenhuis, chain innovator and consultant with a proven track record in the fields of biobased plastics, circular packaging & products and developing innovative circular concepts. Caroli is also a trained packaging expert. She has brought divers innovations effectively into implementation (including several award winning innovations together with brand owners) and has a broad international chain network. Lecturer college for sustainable packaging. Writes articles on bioplastics and circular packaging and also has a solid background in sustainable entrepreneurship, marcom and other media activities. Caroli is located in Amsterdam, The Netherlands.

Caroli Buitenhuis was also the initiator of (among others):

Jan Ravenstijn

Jan is Senior Consultant Biopolymers and Industrial R&D management and works for global companies in chemical and agricultural businesses, bio-refineries, OEMs, investment and consulting companies. He wrote an extensive global bioplastics review paper, is co-author of a bioplastics book for SMEs, is also co-author of a global bio-based polymers and monomers study of the Nova Institute ánd wrote several articles on bioplastics for a number of magazines around the world. Previously he also was a visiting professor on Biopolymers at several universities in Europe and in China. In 2016 he was appointed as a member of the Scientific Advisory
Board of the Aachen Maastricht Institute for Biomaterials. Jan is located in The Netherlands.


Harald Kaeb

Harald is the former chairman of the European Bioplastics Board and was an early pioneer in the area of bioplastics, already since 1992. He is a service provider for the bioplastics and biodegradable polymers industry worldwide and has direct links to a wide variety and a big number of players on all continents. From raw materials to recovery, from research to marketing and distribution, from chemical processes to finished products: Harald developed valuable know how in industrial projects and collaborations. He is in close contact with decision makers and performed studies for public commissioners. Strategic consulting is one of his assets. Harald is located in Berlin, Germany.


Allan Rasmussen

Allan has worked with plastic/polymers for more than 20 years. 9 of these years he worked for LEGO, where he worked with early scouting of potential more sustainable material for the future bricks. He has worked with various processing technologies and has an extensive knowledge on the different polymers and the additives/fillers that can be used to modify them. He has also worked with recycling of plastic – especially post consumer materials. Today, he also works close together with a company, who re-cycles old fishing nets into re-granulate. Allan has a Master of Science in Chemical engineering, a bachelor in Business administration and an executive MBA in Technology management and is located in Denmark.