Maximum Yield USA 2015 April | Page 26

Introducing Coffee Leaf Tea Max Rivest and Arnaud Petitvallet were grad students when they realized there’s more to the coffee plant than its wildly popular beans. The leaves can be turned into a delicious, clean-tasting tea low in caffeine (on par with decaf coffee) and surprisingly high in polyphenols and antioxidants. Now business partners, they say coffee leaf tea offers a much-needed alternative production model for the coffee-producing countries of the world. Coffee is the second most traded global commodity next to crude oil, but it’s harvestable for only three months out of the year, usually December-March. Harvesting coffee leaves, by contrast, is an ongoing job. It remains to be seen if tea and coffee drinkers will be quick to embrace the new beverage on the block, but so far reviews have been positive. “Refreshing,” “no aftertaste,” “pure” and “not tannic” are some of the descriptors used by early testers. (Source: treehugger.com) MAXFACTS Growing tips, news and trivia Cultivating Medicine For St. Paul, Minnesota, vegetable grower Dave Roeser, it’s not just about salad anymore. He is now adding medicinal plants to the mix. With his new company, MnPharm, Dave plans to raise 100,000 genetically modified tobacco plants that can be used to produce medicine for cancer and flu vaccines. Scientists believe tobacco, more than any other plant known to science, is suitable for the rapid development of vaccines. The process starts when the plants are exposed to genetic material related to the disease or virus. The material grows along with the plant until the plants are harvested and pureed to extract the vaccine. MnPharm cofounder Jeff Reinert says the process is similar to genetically modifying food crops to become more drought-resistant or more nutritious. Tobacco plants are also being used for vaccine production in North Carolina, Delaware and Kentucky. (Source: twincities.com) 24 Maximum Yield USA | April 2015 Understanding TDS TDS stands for total dissolved solids, and represents the total concentration of dissolved substances in water. TDS is made up of inorganic salts, as well as a small amount of organic matter. Common inorganic salts that can be found in water include calcium, magnesium, potassium and sodium, which are all cations, and carbonates, nitrates, bicarbonates, chlorides and sulfates, which are all anions. These minerals can originate from a number of sources, both natural and as a result of human activities. Alone, a high concentration of dissolved solids is usually not a human health hazard. In fact, many people buy mineral water, which has naturally elevated levels of dissolved solids. The US Environmental Protection Agency, which is responsible for drinking water regulations, includes TDS as a secondary standard, meaning it is a voluntary guideline in the nation. (Source: safewater.org)