Masticating juicers rely on direct mechanical force to chop and squeeze juice from fruits and vegetables. This method typically involves less power and lower temperatures and is regarded as the best juicing method by many. Masticating juicers are able to use less-powerful motors than other types of juicers because of the way they are designed. Less powerful motors mean less heat being put off. Many people believe that this reduction in heat helps to preserve the natural enzymes found in juice.
Feeder tubes are the parts of juicers where the food is inserted. The larger your feeder tube, the more fruits, and vegetables you’ll be able to cram in at once. Some less-expensive juicers have tops that come off completely, similar to blenders. Juicers with feeder tubes also offer the advantage of being able to press the fruits and veggies into the juicer, helping to chop and grind them up.
Low foam production: The foam that accumulates on top of your juice is a good indicator of how much air has been whipped into your juice by the machine, and more air exposure equals more oxidation. Oxidation is a controversial topic. As Harold McGee explains in On Food and Cooking: The Science and Lore of the Kitchen, “Because juicing mixes together the contents of living cells, including active enzymes and various reactive and oxygen-sensitive substances, fresh juices are unstable and change rapidly.” So the prevailing theory among juicers is that if less oxygen is whipped into a juice, the valuable nutrients and enzymes remain more intact. But as Kohler told us, there’s not much peer-reviewed research on how or if oxidation affects the nutrient contents of your juice. “It’s all manufacturers’ data for the most part,” he said, “which I take with a grain of salt.” That said, we still prioritized machines that produced less foam, because at the very least, oxidation can cause your green juice to turn brown, and may lead to some muddy, off flavors.
The Omega VSJ843 is one of the slowest and quietest machines we’ve tested, and it produces juices without much foam. The VSJ843 produced almost as much green juice as our top pick, the high-yielding Tribest. So if you’re a devoted green juicer, you might prefer this Omega to our pick. However, for most people, its higher price, slightly lower yields on carrot-apple juice, and lack of versatility make it a second choice to our top pick.