
President and CEO, Jefcor Laboratories Inc.
2021 PFCS Achievement Awardee for Service to the Chemistry Profession
It is rare to find someone who has contributed to the advancement of chemistry in the Philippines to all of the sectors and through intangible dimensions. The PFCS wishes to honor such a rare person and now has the privilege to confer the Award of Service to the Profession to Ms. Edna Callejas-Mijares, RCh.
Edna has contributed significantly to the industry, government, and academe sectors. As president and chief operating officer of Jefcor Laboratories Inc., she has nurtured and developed one of the leading chemical analytical laboratories in the country, assisting the agricultural sector to meet the stringent requirements of pesticide residue analysis. For her work in this area, two key societies in this area recognized her achievements: the Philippine Association of Entomologists recognized her twice with the Most Outstanding Entomologist in Entrepreneurship Award in 2002 and the F.B. Calora Award for Outstanding Entomologist in 2015, while the Pest Management Council of the Philippines gave her the Achievement Award in Pest Management in 2004. Edna has been a sought-after consultant for many major agribusiness enterprises in the country. Clearly, Edna knows how to handle pests!
With her considerable experience in business and chemical analysis, Edna has been a key member in the numerous government regulatory, standards and law enforcement agencies, such as the Philippine Fertilizer and Pesticide Authority, the Department of Health, Bureau of Product Standards, Environmental Management Bureau, and the Philippine National Police, among others. She has also generously contributed her time, knowledge, and financial resources to help students at all levels, from elementary school to undergraduate and graduate levels, including review sessions for the Chemistry licensure examinations and OJT opportunities at Jefcor.
Edna stands out through many intangibles that have truly strengthened the profession. This is exemplified by the award that her beloved alma mater, Silliman University, conferred upon her in 2011: the Outstanding Silliman Alumni Awardee in Entrepreneurship in Chemistry.
And, of course, we cannot fail to mention Edna’s 20 years of dedicated and transformative service to the Integrated Chemists of the Philippines (ICP). Edna gave her invaluable support for the passage of the Chemistry Profession Law (now Republic Act 10657) in 2015 after a 15-year effort. As ICP’s Vice-President for External Affairs, Edna worked tirelessly for the implementation of RA 10657, assisting the Board of Chemistry, and helped the various ICP chapters become stronger.
Last, but certainly not the least, this is an award that recognizes Edna’s generosity. One of her awards which may seem less prestigious but is very meaningful is the Bagonhon Gawad Award in Philanthropy which was given during the Bago City 50th Charter Anniversary in February 2016. The Callejas-Mijares Scholarship Foundation Inc., which she and her equally generous husband Jeff established, has been providing scholarships for poor but deserving students from their hometown.
For these and many more contributions that have not been mentioned, the PFCS is proud to confer the 2021 Service to the Profession Award to Ms. Edna Callejas-Mijares!






Dr. Marissa Garcia Noel has long been quietly working to the benefit of the Philippine Chemistry Community. She has been a regular member of organizing committees of the Philippine Chemistry Congress and most notably, has been an indispensable and trusted organizer to whom industry partners and exhibitors flock. She efficiently headed the Ways and Means Committee of many local and international PCCs since 2001 while capitalizing on her reputation to influence industry people, raise funds and generate income for the PCC. Likewise, she also rendered similar services to the Natural Product Society of the Philippines (NPSP). She sat on the organizing committee of several NPSP National Conferences and was the lead local organizer/host of the December 2013 conference held at DLSU.
Dr. Maribel G. Nonato obtained her doctoral degree in Organic Chemistry with specialization on Natural Products Chemistry from the University of Wollongong, New South Wales, Australia in 1993. Upon her return to the University of Santo Tomas, Dr. Nonato resumed her research activities at the Research Center for the Natural Sciences (RCNS) were she pioneered research on the Phytochemistry and Biological Activities of Philippine grown species of the Genus Pandanus (Family Pandanaceae). The main goal of the research is the discovery of novel or new bioactive secondary metabolites from the Genus Pandanus. It is the future goal of the project to develop the plants into herbal products.
Ramon S. Del Fierro is currently an Assistant Vice President for Academic Affairs and Professor of Chemistry in University of San Carlos, Cebu City. His expertise and research interests include: Natural products Chemistry; Biochemistry, Chemical Toxicology; Bioassays; Chemical Education; Educational Administration and Leadership.