by Pain on Wed Sep 23, 2009 9:04 pm
They are pretty good nutrient wise, be careful to get quality very fresh pumpkin seeds however as they are prone to oxidation in de-shelled form (especially in clear packaging), look for crispness and taste is usually a good indicator, fresher seeds will taste better.
You may wish to soak or roast (short time period to reduce oxidation) to deactivate some antinutrients (phytic acid, protease inhibitors) which will make them much easier to digest and for you to utilise the minerals within.
They are a good source of magnesium and phosphorus, both essential in ADP phosphorylation. (ATP regeneration, vital for muscular contraction) these minerals tend to be high in many seeds but the values are quite high (around 120% rda Mg/P as opposed to about 80% rda in sesame seed per 100g) also a good source of zinc (50% rda per 100g)
A nice selection of B vitamins and K too.
Regarding lipid content, high in 18:2 linoleic omega 6 as is common with seeds and nuts and about half as much 18:1 oleic acid omega 9.
Very little 18:3 alpha-linolenic omega 3, so you don't want to over-consume without adequete omega 3 from other areas (animal forms DHA/EPA are far superior to ALA conversion)
One thing i'd recommend is pumpkin seed butter, although it is pricey. (it's certainly worth it taste wise!)
It allows better digestion of the seeds, even if you chew whole seeds thoughroughly many fragments pass through undigested due to antinutrients within, with it pulverized enzymes have a greater opportunity to break it down fully.
Same goes with sesame seed paste (aka tahini), this is cheaper than pumpkin seed butter and you have a strong concentration of lectins which the body converts to enterolactone in the gut, which being a mild phytoestrogen has anti-estrogenic effects.