What Causes Beef Rainbows? According to the USDA, "When light hits a slice of meat, it splits into colors like a rainbow." This is something called a "diffraction grating," essentially what happens when light waves bend or spread around a surface and create a pattern. https://www.theatlantic.com/health/archive/2013/02/what-causes-beef-rainbows/273534/
回复 1楼wenxinhemu的帖子 https://meat.tamu.edu/2013/01/22/rainbow-appearance-cured-meats/ 這裡有比較完整的說明 所以得有 完整的 肌動蛋白 echnically, this is referred to as birefringence. It is caused by the reflectance of light off of muscle proteins, and it is analogous to the color distribution produced by a prism. Muscle proteins are arranged in strands called myofilaments, which are bound together to form myofibrils. Myofibrils are bound together to form muscle fibers, which form together to form muscle bundles and finally whole muscles. When the myofilaments are cut at the appropriate angle, exposing a cross section of the myofilaments, the reflectance of light off the proteins produces the characteristic appearance associated with iridescence.
不知道是不是盐和调味料在这种致密纹理上的效果。我以前买过几次 corned beef, 回来烧熟了切片，女儿不肯吃，说是上面有金属光泽，我还在想怎么回事，哪里来的
According to the USDA, "When light hits a slice of meat, it splits into colors like a rainbow." This is something called a "diffraction grating," essentially what happens when light waves bend or spread around a surface and create a pattern.
https://www.theatlantic.com/health/archive/2013/02/what-causes-beef-rainbows/273534/
生锈的金属也是金属
这种光泽在我们那是肉新鲜的标志之一。
味道挺好的
这样的才新鲜
真的假的？
哇，这什么东东？？？
是Member's Mark USDA Choice Angus Beef Eye of Round Roast。 牛腱太贵了。
这种火腿断面上很常见
这是什么，好可怕。
不错，在放大镜下看，会感受到古代盔甲的质感。
https://meat.tamu.edu/2013/01/22/rainbow-appearance-cured-meats/
這裡有比較完整的說明
所以得有 完整的 肌動蛋白
echnically, this is referred to as birefringence. It is caused by the reflectance of light off of muscle proteins, and it is analogous to the color distribution produced by a prism. Muscle proteins are arranged in strands called myofilaments, which are bound together to form myofibrils. Myofibrils are bound together to form muscle fibers, which form together to form muscle bundles and finally whole muscles. When the myofilaments are cut at the appropriate angle, exposing a cross section of the myofilaments, the reflectance of light off the proteins produces the characteristic appearance associated with iridescence.
谢谢🙏
不柴，很好吃。看起来很柴是因为煮好后凉了一晚，还没来得及放冰箱。
味道很好，很香。先是用炒的（盐+花椒+孜然粒）腌制一晚再用黄豆酱腌一天，最后用八角桂皮丁香香叶煮四五十分钟。
我也觉得
是了
這種肌蛋白 的光效應 上面不能有牛油 有的話就看不到了
炒的去油 黃豆醬也去油 香料都是去油的 看起來會柴
肌蛋白要新鮮的才能維持結構 不新鮮就降解了
相對來說 魚油的光學效應沒那麼大(不凝固)
當然還得是新鮮的魚 肌蛋白結構才能留住