Rosemary distillation at ACHS a great success

ACHS President Dorene Petersen led a rosemary distillation on the American College campus Wednesday, June 17. From the ACHS Botanical Teaching Garden, Dorene and ACHS student participants harvested about 10 lbs. of fresh rosemary.

The distillation was a terrific success and led to a great yield. From the 10 lbs. of rosemary Rosmarinus officinalis, which was stripped from its woody stems to ensure the highest quantity of anti-inflammatory ester borneol acetate, nearly 45 mls of essential oil was extracted, and nearly 1,000 mls of hydrosol.

As a thank you to the attendees who volunteered their time to help with the harvest and distillation, everyone took home a vial of rosemary essential oil and some hydrosol.

Hydrosols, also known as flower water, are steam distilled from plant material. Hydrosol is similar to essential oil, but less concentrated. They are often used externally in skin care, and work well as a simple mist.

For more information about harvesting rosemary for distillation, check out ACHS on YouTube. A video of President Dorene Petersen explaining the process of harvesting and distillation of essential oil will be available for download on ACHStv soon.

To participate in a future ACHS distillation, check out the College community wellness classes calendar. On July 17 ACHS is hosting a U-Pick Lavender Open House on the ACHS campus. Then, on July 18, ACHS Senior Vice President Erika Yigzaw will lead a lavender distillation at Sherwood Lavender Farms.

Pine essential oil may be natural insect repellent

As the weather warms, we spend more and more time outside. Whether you have a family camping trip planned, or just plan to hang out in your backyard, mosquitoes can make outdoor living pretty uncomfortable. However, there is another reason to use insect repellent. "Human diseases caused by blood-feeding ticks and mosquitoes represent a serious threat to public health worldwide," according to the website ScienceDaily.com.

Agricultural Research Service scientists have discovered that a naturally-occurring compound made from pine oil seems to deter the biting of mosquitoes more effectively than the widely used synthetic chemical repellent DEET.

"Many natural-product chemicals isolated from plants and essential oils have proven to have repellent effects," reports the article "Tick and Mosquito Repellent Can Be Made Commercially From Pine Oil." "This newly-discovered repellent can be prepared inexpensively from pine oil feedstock in ton quantities for large-scale commercial applications, giving it a significant advantage over many of the other natural-product repellent chemicals."

In the meantime, however, pine Pinus sylvestris essential oil has been shown to have natural insecticide properties. The essential oil has a sweet, woody fragrance with a somewhat balsamic undertone, which sweetens as it evaporates. Used externally, the Recommended Daily Dose is 1-3 drops, or diffuse into the air.

*A skin patch test is recommended. Avoid use on sensitive or damaged skin.