This was obtained over 39 days for a gas flow range between 0.12 and 0.72 m3 hâ1 and a resulting toluene inlet concentration range of 0.71â0.51 g mâ3, respectively. During the first 25 days, the greatest EC was in the first stage (55 g mâ3 hâ1), contrasting with the low EC obtained in the other two stages.
Varieties include ginger, ginkgo biloba, ginseng, hibiscus, jasmine, rosehip, mint, rooibos (red tea), chamomile, and echinacea. Limited research has been done on the health benefits of herbal teas, but claims that they help to shed pounds, stave off colds, and bring on restful sleep are largely unsupported.
Generally speaking, any herb which is considered fine for food use is presumed to be safe for teas as well. Look on packaging labels for contents that may normally be part of your diet (such as mint, lemon or orange extracts). You can also buy herbal tea blends specifically made for drinking when you are pregnant.