British researchers are developing a palm oil substitute from a yeast grown using sustainably-sourced waste feedstocks.
Source:
AAP
7 Dec 2015 - 1:45 PM  UPDATED 7 Dec 2015 - 1:48 PM

Engineers and scientists are working to produce the first yeast-based alternative to palm oil on an industrial scale.

Teams from the University of Bath and University of York are developing the palm oil substitute from a yeast grown using sustainably-sourced waste feedstocks.

Palm oil is an edible vegetable oil, high in saturated fats - with a high melting point, and is derived from the fruit of oil palms, mostly the species Elaeis guineensis.

Approximately 60 million tonnes of palm oil is produced each year across the world, with more than 40 million tonnes exported to more than 70 countries.

The oil, which has relatively low production costs, is used in biofuels, food such as cakes and biscuits, and cosmetic products including lipstick and shampoo.

However, a high demand for the oil has caused the rapid expansion of palm plantations in Southeast Asia.

This has been linked to widespread and severe deforestation, water pollution, increased greenhouse gas emissions and heavy smog pollution across the area.

Scientists at the University of Bath previously found the yeast Metschnikowia pulcherrima can be grown on a variety of agricultural and food wastes.

With slight changes to growth conditions, the yeast can be made to produce a thick oil with nearly identical qualities to palm oil.

Researchers say they are confident it could became a direct replacement for palm oil, mitigating the environmental issues associated with palm oil production.

The team, along with industry partners Croda, C-TECH and AB Agri, has been awarded a grant of STG4.4 million ($A9.05 million) to examine how to produce the oil on an industrial scale.

During the research, scientists will apply a method of depolymerising waste feedstocks using efficient large-scale microwave heating at the University of York.

The team at the University of Bath will improve the genetic understanding of the yeast, scale up the fermentation to an industrial scale and assess the total environmental impact across the life cycle.