Quality Control and Manufacturing Process
"Seed to Shelf” Consciousness, promoted by Dr. David Eisenberg of Harvard University, is an approach to tracking herbs and maintaining accountability from the origin as seeds, through planting, maturation, harvesting, processing, and testing, until the herbs are delivered to you. Evergreen Herbs employs the following safety processes and checks to assure safety, quality, and ultimately, clinical efficacy. These processes and commitments are why Evergreen Herbs are good for you and why medical professionals choose Evergreen.
*These tests are performed on herbs when applicable.
Evergreen selects whole, medicinal-grade herbs with abundant phyto-nutrients
Ginseng, best from
Jilin Province in China
Electron microscopy to examine the cellular structure of the herb to ensure authenticity and quality
Thin Layer Chromatography (TLC) identifies the unique component make up of an herb while High Performance Liquid Chromatography (HPLC) ensures that the bio-active constituents are present in proper concentration
Pesticide testing for over 100 different kinds of organochlorine and organophosphorus compounds for at risk-herbs
Microbial tests for E.coli, Staphylococcus, Salmonella, Enterobacteriaceae, mold and yeast to ensure you receive the safest product on the market today.
Quality products begin with premium raw material. We seek out growers who routinely test both the soil and water for quality and freedom from contamination. We select whole, medicinal-grade herbs with abundant phyto-nutrients and medicinal potency. By supporting farmers that follow Good Agricultural Practices (GAP), we help to ensure sustainable farming of high quality Chinese herbs.
We take geo-authenticity seriously. This means we obtain herbs that are indigenous to a specific region, and when grown there will yield the best medicinal results. For example, Chuan Bei Mu (Bulbus Fritillariae) should be grown in the Sichuan province for the best results, as the soil and climate of Sichuan produce the highest development of its therapeutic components. In addition, we select the appropriate therapeutic portion(s) of the plant and pay careful attention to the method and timing of harvesting, in order to maximize and preserve their effectiveness.
Our senior herbalist, qualified to perform organoleptic identification, starts the process of confirming the authenticity of the herbs via taste and visual comparison. Criteria such as correct color, freshness, and appearance are taken into consideration in selection of the best raw material.
Because many herbs look and taste similar, we further ensure authenticity by using electron microscopy to examine the cellular structure of the herb. The cellular structure of each herb is unique, much like a fingerprint. While many companies do not take this extra step, sometimes meaning that inappropriate substitute herbs and substandard subspecies are brought to market, this is one test that we at Evergreen consider absolutely necessary to verify and ensure authenticity and quality.
Advanced Testing to Ensure Quality and Safety
After visual inspection, laboratory tests are performed to detect what cannot be seen or tasted. Evergreen uses Thin Layer Chromatography (TLC) to identify the unique component makeup of an herb to further guarantee its authenticity, and High Performance Liquid Chromatography (HPLC) to ensure that the bio-active constituents are present in proper concentration. Together, the TLC and HPLC guarantee accuracy in species and maximum deliverance of active ingredients in our herbs.
Protection Against Heavy Metals
After ensuring authenticity and active ingredients, our herbs are tested for safety. We have increased our standard of quality control by testing for safety against EACH heavy metal (arsenic, cadmium, lead and mercury) - rather than just the total heavy metal amount.* Most suppliers test only the total heavy metal amount, which means variance in one heavy metal above its individual limit may be offset by a low count in another. Total heavy metal count can be up to as high as 200 ppm (parts per million) in some companies. Though taking on this difficult task means rejecting many batches of herbs that do not meet the Evergreen standards, we believe it is still necessary in order to deliver the absolute purest herbs to you and your patients.
Our heavy metal tests are performed using scientifically validated methods, in accordance to the US Pharmacopoeia and the World Health Organization (WHO) standards.
*See Lab Test chart for detail
Evergreen herbs are safe from pollutants, insecticides, fungicides, herbicides, and pesticides. Our on-site lab and independent labs test at-risk herbs for a total of over 100 different types of organochlorine and organophosphorus compounds.
Safety Against Bacteria
We insist on microbial tests following the guidelines of the US Pharmacopoeia. Scientists in our full-scale microbiology lab test our herbs for Escherichia coli, Staphylococcus aureus, Salmonella spp., Enterobacteriaceae, and other gram negative bacterium; for total bacteria count, and for total yeast and mold counts, to ensure you receive the safest product on the market today.