NEW YORK (TheStreet) -- Hain Celestial's  (HAIN) BluePrintCleanse and Starbucks (SBUX) cold-pressed juice line Evolution Fresh have been waging a battle on grocery store shelves.

That battle could morph into a full-fledged war because of advances from BluePrintCleanse, which was acquired by Hain Celestial in 2010. Starbucks acquired Evolution Fresh in 2011 for $30 million.

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According to Nutrition Business Journal, an independent research firm, sales of natural and organic food increased at a compound annual growth rate of 12% from 1997 to 2011, reaching a total market size of $43 billion in the U.S. Nutrition Business Journal estimated that the CAGR will be 10% for the category from 2011 to 2020, no doubt supported by folks striving to live healthier lifestyles.

Sheila Stanziale, president of Hain Celestial's U.S. baby and refrigerated segment, assigned a value on the super-premium cold-pressed juice market at "about $500 million" but that number is fuzzy as it could include people home-pressing their own juices. Stanziale, who joined Hain Celestial in January, said estimates on the market's value aren't "specifically tracked" yet, but said the industry is expanding "rapidly."

That's hard to dispute when looking at the expanding list of products from BluePrintCleanse and Starbucks' Evolution Fresh as well as the sales figures from the former.

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