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Blood Cancers & Disorders | Last Active: Aug 17 8:33am | Replies (8)
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Replies to "I should have been a bit more specific in my answer about the powdered turmeric /..."
So many unknowns. The concentration of curcuminoids in supplements can be much higher than that from powdered turmeric, and GI absorption is aided by bioavailable modifications (fat [lipids], pepperine [black pepper]). At least based on this research link, curcumin in turmeric averages about 3.14%; the range from other papers is 0.3 to 8.6% (soil composition, irrigation and such influence concentration). Also, who knows if there are other chemicals in turmeric root that are useful. https://pubmed.ncbi.nlm.nih.gov/17044766/ I grind and freeze turmeric for use in cooking. Impact of heating on curcumin are mixed. Here is an abstract from https://ifst.onlinelibrary.wiley.com/doi/10.1111/j.1365-2621.2009.01976.x on effects of drying/heating on curcumin stability "Summary Studies were undertaken to examine the effect of heat treatment on total phenolic content (TPC), colour value (yellowishness and brightness), polyphenol oxidase (PPO) activity and curcuminoid of fresh turmeric rhizome. Fresh turmeric rhizomes were subjected to heat treatment at different temperatures (60-100 °C) for different durations (10-60 min), causing a reduction in browning which was evident from the improved yellowishness and brightness. Activity of PPO was also decreased during heat treatment and PPO was almost inactivated when heated at 80 °C for 30 min. TPC of heat-treated turmeric after drying (powder) is significantly higher than that after the fresh process. TPC values increased gradually when samples were heated from 60 to 80 °C. At 90 and 100 °C, TPC values were almost identical. Maximum brightness and yellowishness were obtained when the turmeric was heated above 80 °C. Quantitation of curcuminoids in the turmeric sample was made with high performance thin layer chromatography (HPTLC). There was no significant change in the concentration of curcuminoids among the heat-treated samples. But in the sun-dried samples, a significant reduction in curcuminoid concentration was observed."