牛黄,是常用贵重中药材之一。由于货源缺少,目前多以人工牛黄代用。我们曾收到一种试作代用品,称“猪黄”的药材。本品据调查了解确系宰牲场从猪的内脏发现的。经鉴别与天然牛黄不同,而化学试验则与人工牛黄、天然牛黄相似。猪黄并不多见,故将该品的鉴别试验情况介绍如下: 外观性状:本品为卵圆状,长10.5公分,直径3.65公分。表面棕黑色,无光泽,质地细腻。易层层剥落,碎片呈瓦块 Niuhuang is one of the commonly used valuable Chinese herbal medicines. Due to the lack of supplies, artificial bezoars are currently used instead. We have received a kind of trial substitute, called “pig yellow” herbs. According to the investigation, this product was found to have been found in the guts of pigs from the internal organs of pigs. It was identified differently from natural bezoar, and the chemical tests were similar to artificial bezoar and natural bezoar. Pig yellow is rare, so the identification of the product is described as follows: Appearance: This product is oval-shaped, 10.5 cm long, 3.65 cm in diameter. The surface is dark brown, dull, and delicate in texture. The layers are easy to peel off and the debris is tiled