Wheatsheaf Group, the investment arm of the Grosvenor family office, has acquired a 90% stake in Purfresh—a provider of specialised climate control technology designed to reduce food waste during shipping. It is estimated as many as one out of 15 containers, some worth up to $500,000, are rejected when they arrive at their destination due to spoilage, according to Purfresh. Based in San Francisco, the company’s technology combines controlled atmosphere and active atmosphere with ozone technology to reduce food-waste—delaying ripening, reducing decay and improving food safety through reducing food-borne pathogens—without the use of harsh chemicals.