MARCH 22, 2000

CONTACT: Pat Wright, 661/664-2138; pwright@csub.edu



CSUB students to present papers


Two California State University, Bakersfield students will present papers at the national meeting of the American Chemical Society when the group convenes next week in San Francisco.

Christopher Hinton will present his quantum mechanical studies of relative carbon-hydrogen bond strengths. His calculations show the differences among carbon-hydrogen bonds of methane, ethane, and toluene. In his paper entitled "Computational study of hyperconjugation in radicals and diradicals," Hinton used quantum mechanics calculations to compare the carbene stabilization enthalpies of phenylcarbene, ethylidene, and trifluoromethylcarbene. His faculty adviser is chemistry professor Carl Kemnitz.

Ruth Vienote will present research into key biosynthetic processes of the common horehound, known to have medicinal properties. Marrubiin is the major diterpene constituent found in the medicinal herb Marrubium vulgare or common horehound. In her research entitled "Diterpenoid biosynthesis in the common horehound: Isolation and characterization of secretory cells producing the furanic labdanes," Vienote isolated specialized leaf surface structures known as secretory cells which have been shown to be responsible for diterpenoid production in the horehound plant. Her faculty adviser is chemistry professor Roy LaFever.

Horehound, a member of the mint family, has been used for centuries to relieve respiratory and bronchial ailments and a compound known as marrubiin has been implicated as the active constituent. Research indicates marrubiin has biological effects, including anti-viral and antibiotic activities. Extracts from the plant also repel a number of insect pests making it a promising lead for use as an insecticide.

The American Chemical Society meets March 26-31 in San Francisco. More than 8,800 papers will be presented and nearly 18,000 people will attend.