Posted by oracle on November 20, 2002, at 11:19:27
In reply to Re: Hemp doesn't contain EPA DHA !??!?, posted by Larry Hoover on November 20, 2002, at 8:32:31
http://www.gov.on.ca/OMAFRA/english/crops/hort/hemp/hempthesis.htm#essential
Essential Fatty Acid Profile
Average values for the essential fatty acid profiles of hemp seed oil from eight varieties of industrial hemp are given in Table 3. The values for linoleic acid (omega-6), gamma linolenic acid (GLA), and linolenic acid (omega-3) fall well within the values for other hemp varieties around the world (see Table 4). It is particularly interesting to note that the ratio of omega-3 to omega-6 fatty acids are almost exactly three to one (Table 3) for all varieties. This is the nutritionally optimum ratio for human health, and Jones (1995) feels that a precise three to one ratio will be desirable for future production of hemp seed for human consumption. Table 5 provides the complete fatty acid profile for the eight varieties of industrial hemp. The N refers to number of sites averaged and Felina 34 and Fedora 19 had 15 and 14 sites averaged respectively.
Again, geographic effects cannot be detected from these data due to the large sampling range and averaging of EFA content across this range. Varietal differences appear minute, the only exception being FIN-314 which exhibits a GLA content of 4.22 %. This result concurs with Callaway et al. (1996) who reported a GLA content of 4 % in samples of FIN-314 seed. The high GLA content of FIN-314 relative to the other varieties examined in this report warrants further investigation and trials of this variety in northern Ontario. This may prove to be an important characteristic as GLA is of particular interest to the pharmaceutical industry.
Przybylski et al. (1997) demonstrated that European varieties grown in Manitoba showed a ten percent increase in linolenic acid and GLA content compared to the original seeds. Such a comparison was not possible for the data presented in this report since the original seeds were not analyzed for fatty acid content, and future studies will be necessary to test whether seeds grown in Northern Ontario show increased EFA content over the original European seeds.
poster:oracle
thread:128343
URL: http://www.dr-bob.org/babble/20021116/msgs/128457.html