Acirca, Inc. yesterday announced it has acquired Mountain Sun, the number one brand of certified organic juice in the United States. As the leader in this rapidly growing segment, Mountain Sun's products are an ideal complement to Acirca's current portfolio of Walnut Acres certified organic soups, salsas and sauces. The acquisition allows Acirca to enter the $4 billion shelf stable juice category and one of the highest growth segments of the $8 billion organic food and beverage category of North America.