opal® is the brand name for apple cultivar 'UEB 32642'. The variety originates from a natural crossing of 'Golden Delicious' with 'Topaz'.[1]
Developed by the Institute of Experimental Botany in Prague,[2] it is grown by FirstFruits Farms LLC in Washington and marketed by FirstFruits Marketing.[3][4]
It is also cultivated in Austria, Italy, Spain, Germany, Slovenia, France[5] and the United Kingdom. 'UEB 32642' is a variety registered at the Community Plant Variety Office of the European Union[6] under EU N°: 16749.
This variety of apple is naturally low in polyphenol oxidase and is often sold pre-sliced.
不常见，Opal Apple 似乎是个不错的替代品。
“岐伯曰：女子七岁，肾气盛，齿更发长。
二七，而天癸至，任脉通，太冲脉盛，月事以时下，故有子。
三七，肾气平均，故真牙生而长极。
四七，筋骨坚，发长极，身体盛壮。
五七，阳明脉衰，面始焦，发始堕。
六七，三阳脉衰于上，面皆焦，发始白。
七七，任脉虚，太冲脉衰少，天癸竭，地道不通，故形坏而无子也。”
http://www.clc-coop.tw/files/news/348_01e5fda6.pdf
估计苹果变色也是阳明气衰而焦。
因为糖分问题，估计吃太多任何水果，都对血糖有影响。
opal® is the brand name for apple cultivar 'UEB 32642'. The variety originates from a natural crossing of 'Golden Delicious' with 'Topaz'.[1]
Developed by the Institute of Experimental Botany in Prague,[2] it is grown by FirstFruits Farms LLC in Washington and marketed by FirstFruits Marketing.[3][4]
It is also cultivated in Austria, Italy, Spain, Germany, Slovenia, France[5] and the United Kingdom. 'UEB 32642' is a variety registered at the Community Plant Variety Office of the European Union[6] under EU N°: 16749.
This variety of apple is naturally low in polyphenol oxidase and is often sold pre-sliced.
https://en.wikipedia.org/wiki/Opal_(apple)
不是从健康角度，而是从口感享受而言。
原产捷克。
https://www.npr.org/sections/thesalt/2014/03/24/291963536/apples-vs-oranges-google-tool-offers-ultimate-nutrition-smackdown
苹果最大的问题是缺少Vitamin C。
某些品种的苹果刚从树上摘下来还有比较丰富的VC。