海虾与河虾口感差别大
- 时间:2012-10-22 20:56:33
- 分类:食品科学
- 阅读:143 次
虾类中蕴含丰富的蛋白质和其他人体所需营养素,虾肉鲜嫩甘甜,是既营养又美味的食物。虾有河虾与海虾之别,海虾以白虾为主要品种,河虾以沼虾为主要品种,外形相似,口感却有差别。在购买时需要从外观上仔细辨别。
白虾:全身披以甲壳,腹部的第二节甲壳覆盖在第一节腹甲的外面,有两条较短的细须,身体白色透明,微有蓝色或红色小斑点,外壳很薄,但比较硬,虾身略呈侧扁,壳脊略呈棱边。海虾性温湿、味鲜咸,补肾效果较强。
沼虾:又名青虾,全身也披以甲壳,但步足前有螯,呈钳状,特别是第二对步足非常粗大,其长度超过体长的2倍以上,强壮有力。虾体呈青绿色,带有棕色斑纹,外壳很薄且较软,虾身呈圆柱形。虾肉呈半透明玉色,沼虾头胸部宽度大于白虾,虾胸也远比白虾丰满肥腴。
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