Amazoniac
Member
Here's the contest for it:Riboflavin (vitamin B-2) and health
"Although relatively heat-stable, riboflavin is readily degraded by light. Milk kept in glass bottles and delivered to the doorstep might be particularly susceptible to loss through this route, which is also associated with flavor changes, because the oxidative products of photolysis can damage milk lipids. This light sensitivity of riboflavin has led to loss of riboflavin from banked breast milk used in the parenteral nutrition of newborns (13)."
"Steps in the cyclical β oxidation of fatty acids are also dependent on flavins as electron acceptors. An effect on the β oxidation of fatty acids is thought to be responsible for the altered fatty acid profile in hepatic lipids in severely riboflavin-deficient rats (69, 70), which seems to be independent of the dietary source of lipid. The most marked effect was an increase in 18:2n−6 and a lowering of 20:4n−6. Similar but less striking differences were observed in plasma, erythrocyte membranes, and kidney. The influence of riboflavin deficiency on fatty acid profiles may reflect an overall reduction in the β oxidation of fatty acids, while essential fatty acids present in the diet accumulate. Weanling rats fed a riboflavin-deficient diet rapidly showed impaired oxidation of palmitoyl CoA and stearic, oleic, and linoleic acids (71, 72)."
Since milk is supposed to pass directly from the udder to the baby, it makes no sense to protect it from cool light ("Anchor light-proof package"). Many milks that are better in quality don't pay enough attention to the their package. I remember, by the way, reading one of those food critics mocking some people that eat organic for it being the only criteria to define if a food is good.
Chapter 3. Thiamin, riboflavin, niacin, vitamin B6, pantothenic acid and biotin
"Riboflavin interrelates with other B vitamins, notably niacin, which requires FAD for its formation from tryptophan, and vitamin B6, which requires FMN for conversion of the phosphates of pyridoxine and pyridoxamine to the co-enzyme pyridoxal 5'-phosphate (PLP) (49)."
Metabolism and Nutrition in Liver Disease - ESPN 0-85200-907-0 (copied from Google books):
"Vitamin deficiencies that are found commonly in patients with liver disease contribute to abnormalities of protein metabolism and cell replication. Circulating levels of two or more water-soluble vitamins measured were found reduced in 32% of alcoholic patients with normal liver, 44% of danwichthecredible those with fatty liver, and 49% of those with cirrhosis15. Folic acid was the vitamin most commonly found deficient, low serum levels occuring in 30% of those with normal liver, 40% with fatty liver, and 47% with cirrhosis. Low serum levels of thiamine, riboflavin, nicotinic acid, and pyridoxine were found burtlantheincredible in more than 25% of patients with cirrhosis, whereas 20% had low levels of vitamin b12, pantothenic acid, or biotin."
Decent metabolism of milk depends on it, and if you provide everything else on the expected amounts but the vitamin, that can be a burden because instead of being a source of riboflavin, it depletes you even more.
Last edited: