TOKYO, Aug 4 (Reuters) - Mitsubishi ( MSBHF ) has made an

offer to increase its stake in Thai Union Group Public Company

Limited, a major canned tuna producer, to 20% from

6.19%, both companies said on Monday, as the Japanese trading

house expands further into the food business.

Mitsubishi ( MSBHF ) was seeking to buy 532,273,639 shares in the

company, or 13.81%, according to the Thai company. Based on the

offering price of 12.5 Thai baht ($0.3853) per share disclosed

by Mitsubishi ( MSBHF ), the deal is worth around $205 million.

Last month, Mitsubishi ( MSBHF ) said it planned to spend around $1

billion to expand in salmon farming by acquiring additional

businesses in Norway and Canada, part of a push into the food

business, with a focus on protein.

Higher profits in the diversified food businesses run by

Japanese trading houses offset weaker performances at their

commodities units, drawing attention from Warren Buffett's

Berkshire Hathaway ( BRK/A ) to take minority stakes in Japan's

top five trading houses, including Mitsubishi ( MSBHF ).

($1 = 32.4400 baht)

(Reporting by Katya Golubkova; Editing by Lincoln Feast.)