UPDATE 1-SunOpta posts Q1 loss

* Q1 loss $0.03/shr vs yr-ago profit $0.02/shr

* Q1 rev increases slightly to $232.1 mln

May 7 (Reuters) - Canada's SunOpta Inc (STKL.O) (SOY.TO) posted a first quarter loss, hurt by foreign-exchange rate changes versus the U.S. dollar and decline in commodity prices.

For the quarter, the company, which processes natural and organic food products, posted a net loss of $1.7 million, or 3 cents a share, compared with a profit of $1.5 million, or 2 cents a share, a year earlier.

Revenue for the quarter was $232.1 million, above $230.4 million in the year-ago period.

Shares of the company closed at $1.94 Thursday on Nasdaq. The company's shares closed at C$2.20 on the Toronto Stock Exchange. (Reporting by Richa Dubey in Bangalore; Editing by Ratul Ray Chaudhuri)