|
|
| Home >
Newsletters >
December 2008 >
Antioxidant Activity of 45
Chinese Herbs and the Relationship with their TCM
Characteristics |
Antioxidant Activity
of 45 Chinese Herbs and the Relationship with their
TCM Characteristics
|
A study of 45 Chinese herbs that regulate blood circulation were
analyzed for antioxidant activity using the oxygen radical absorbance
capacity (ORAC) assay. The ORAC assay is a test used for measuring
antioxidant levels in foods. In a recent publication, a close
relationship between in vitro antioxidant activity and classification of
Chinese herbs as yin or yang was determined. The 45 Chinese herbs in
this study could be assigned the traditional characteristics of natures
(cold, cool, hot, and warm), flavors (pungent, sweet, sour, bitter, and
salty) and functions (arresting bleeding, promoting blood flow to
relieve stasis, nourishing blood, and clearing heat from the blood).
These characteristics are generalized according to the theory of yin and
yang.
The study found that there was no significant correlation between ORAC
values and the natures or functions of the herbs. However, there was a
significant relationship between the flavors and the ORAC values. Bitter
and sour herbs had the highest ORAC values; pungent and sweet herbs had
the lowest. The other flavors had ORAC values falling somewhere in
between. Flavors also correspond with the yin/yang relationship. High
antioxidant herbs were identified as
• Ji Xue Teng (Spatholobus suberectus vine) - (1990 micromol TE/g),
• Di Yu (Sanguisorba officinalis root) - (1940 micromol TE/g)
• Xian He Cao (Agrimonia pilosa herb) - (1440 micromol TE/g)
• Liu Ji Nu (Artemisia anomala herb) (1400 micromol TE/g)
• Dan Shen (Salvia miltiorrhiza root) - (1320 micromol TE/g)
• He Ye (Nelembo nucifera leaf) - (1300 micromol TE/g)
Antioxidant capacity appears to correlate with the flavors of herbs
identified within the formal TCM classification system and may be a
useful guide in describing their utility and biochemical mechanism of
action.
Source: Liao H, et al. Department of Pharmacy, Shanxi Provincial
People's Hospital, 99 Shuangtasi Street, Taiyuan, Shanxi 030012, China.
huiliao@263.net. Evid Based Complement Alternat Med. 2007 Jun 11.
|
|
|
|