|It does resemble a birds nest but what you see here are silk proteins not swallow eggs and birds poop.|
Now that we have got the sarcastic introduction out of the way, let's get back to the facts the study at hand is not the first to describe beneficial effects that may be brought about by the consumption of silk peptides.
Silk the traditional protein base fat burner from the far East?
What may sound gross to some of you, does in fact have a longstanding tradition in the Asian countries and has already been shown to suppress adipogenesis in preadipocytes of rodents on high fat diets by Lee et al. in 2012.
|The mashes that are used to cover up hernias could soon be made of silk, as well.|
Scientists from the Tufts University and other renowned research facilities are also developing new silk-based delivery devices for drugs (Pritchard. 2010).
|Figure 1: Fat oxidation in control and silk peptide group at the end of the study period (Kim. 2013)|
|Figure 2: The 66% reduction in food efficiency does basically mean the rodents hat to eat 3x more to gain the same amount of body weight, the high isoleucine content in the silk peptides should remind you of a previous SuppVersity article on the beneficial effects of isoleucine containing peptides in whey hydrolysates (read more)|
|Read my past elaborations on silk proteins, when BPI first announced their new "BLOX" silk protein supplement (read the whole article)|
Speaking of whey hydrolysates: If your goal is to build mass and lose body fat the similarity of silk proteins to whey hydrolysates may, in fact be another reason not to literally buy into the hype (which has by the way already abated ;-) Why? Well you must have missed Tuesday's post "Is hydrolized Whey, the New Way to Go? 12 Week Human Study Suggests: Yes, If Your Goal is to Ward Off Oxidative Damage. No, If You Want to Build Muscle & Lose Fat" (read more) otherwise you wouldn't be asking.
- Do SG, Park JH, Nam H, Kim JB, Lee JY, Oh YS, Suh JG. Silk fibroin hydrolysate exerts an anti-diabetic effect by increasing pancreatic β cell mass in C57BL/KsJ-db/db mice. J Vet Sci. 2012 Dec;13(4):339-44.
- Kim J, Hwang H, Yun HY, Kim B, Lee CH, Suh H, Lim K. Silk Peptide intake increases fat oxidation at rest in exercised mice. J Nutr Sci Vitaminol (Tokyo). 2013;59(3):250-5.
- Lee HS, Lee HJ, Suh HJ. Silk protein hydrolysate increases glucose uptake through up-regulation of GLUT 4 and reduces the expression of leptin in 3T3-L1 fibroblast. Nutr Res. 2011 Dec;31(12):937-43.
- Lee SH, Park D, Yang G, Bae DK, Yang YH, Kim TK, Kim D, Kyung J, Yeon S, Koo KC, Lee JY, Hwang SY, Joo SS, Kim YB. Silk and silkworm pupa peptides suppress adipogenesis in preadipocytes and fat accumulation in rats fed a high-fat diet. Eur J Nutr. 2012 Dec;51(8):1011-9.
- Pritchard EM, Valentin T, Boison D, Kaplan DL. Incorporation of proteinase inhibitors into silk-based delivery devices for enhanced control of degradation and drug release. Biomaterials. 2011 Jan;32(3):909-18.