One Article Understanding: Identification Guide For Genuine And Fake Cistanche Tubulosa+smoked Sulfur Cistanche Tubulosa

Cistanche tubulosa is known as the "Desert Ginseng" and is a top-grade nourishing herb recorded in the "Shennong Bencao Jing". It has the effects of tonifying kidney yang, nourishing essence and blood, and moistening the intestines and promoting bowel movements. With the rise of the health trend, the quality of Cistanche products on the market varies greatly, with fake Cistanche and smoked sulfur Cistanche emerging one after another. This not only wastes consumers' money, but long-term consumption of smoked sulfur Cistanche can also harm liver and kidney health. This article combines the standards of the Chinese Pharmacopoeia with actual purchasing scenarios to teach you how to quickly and systematically distinguish between genuine and fake Cistanche tubulosa and smoked sulfur Cistanche tubulosa, avoiding all purchasing traps.

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Authentic identification of Cistanche tubulosa (4 core dimensions, beginners can quickly understand)

According to the Chinese Pharmacopoeia, authentic Cistanche tubulosa only refers to the dried fleshy stems with scaled leaves of Cistanche tubulosa or Cistanche tubulosa, which belong to the family Menispermaceae. Common counterfeit products are mostly plants such as Cynomorium songaricum, Ophiopogon japonicus, and Cistanche tubulosa. The two have significant differences in characteristics and texture and can be accurately distinguished using the four-step method of "seeing, touching, cutting, and tasting".

Appearance: Genuine products have "iconic features", counterfeit products can be identified at a glance

 

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Appearance is the primary step in identifying true and false Cistanche tubulosa, with a focus on three key points: shape, color, and scales. There are significant differences between genuine and counterfeit products

Authentic Cistanche tubulosa: divided into two types: the tube flower Cistanche tubulosa and the desert Cistanche tubulosa. Cistanche tubulosa is spindle-shaped, flattened or columnar, slightly curved, 5-25cm long, 2.5-9cm in diameter, with a surface that is brown to black. The scales and leaves are relatively sparse but still recognizable. Desert Cistanche has a flattened cylindrical shape, slightly curved, measuring 3-15cm in length and 2-8cm in diameter. Its surface is brown or gray-brown, and it is densely covered with fleshy scale leaves arranged in a tile-like pattern. The tips of the scale leaves are usually broken, with "stem marks" (commonly known as "reed heads") at the top and occasional residual whisker root marks at the bottom; Regardless of the type, the color is natural brown or gray brown, without any unusual bright or pale feeling.

• Common counterfeit products:

￮ Lockyang: It is flat, cylindrical, slightly curved, 5-15cm long, 1.5-5cm in diameter, with a brown or brownish surface, rough, and no dense fleshy scales or leaves. Instead, there are obvious longitudinal grooves and irregular depressions, and some residual triangular black brown scales. There is no reed head at the top, and the overall texture is thinner and rougher than the genuine product.

◦ Zizania plants: they are often sold under the names of "Herba Cistanche" and "Xizang Cistanche". The surface is reddish brown to brownish brown. The rhizome is spherical with nodular protrusions; some are coral-shaped, the surface is rough with granular protrusions, and some varieties are litchi shell-shaped. The flower stem grows from the top of the rhizome, which is very different from the cylindrical fleshy stem of Cistanche tubulosa.

Cistanche tubulosa: a plant belonging to the same genus but not included in the Chinese Pharmacopoeia for medicinal purposes. Its surface scales are narrow and short, and its overall appearance is dry and shriveled, which is significantly different from the plump scales and thick morphology of authentic Cistanche tubulosa.

￮ Splicing/staining counterfeit: using crushed Cistanche tubulosa or other medicinal herbs to splice into a cylindrical shape, with uneven distribution of scales and visible splicing marks. Some unscrupulous merchants use dried sweet potatoes to dye and pretend to have a smooth surface without scales or leaves, and the color is too uniform and bright.

Texture: Genuine products are "hard with toughness", while counterfeit products are "brittle or stiff"

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Texture is a key aid in distinguishing between genuine and fake Cistanche tubulosa, and most counterfeit products can be quickly eliminated through tactile sensation.

Authentic Cistanche tubulosa: Weight, hard texture but slightly flexible, not easy to break, although hard when dry, can feel obvious toughness when broken; High-quality dry products have a smooth texture and can feel elasticity when pinched by hand. They become soft when damp and have no dry or brittle hair. Among them, the texture of Cistanche tubulosa is relatively flexible, while the texture of Cistanche tubulosa is slightly hard, but neither feels stiff.

Counterfeit: Lockyang has a hard texture like wood, which is easily brittle and lacks any toughness when broken; Plants of the Snake Snake Snake genus are heavy but brittle in texture, and are prone to breakage; Fake dyed sweet potato jerky has a soft texture, which can clump up with just a pinch and stick to the hands; The texture of Cistanche tubulosa is dry and brittle, without elasticity, and can break easily when folded.

View cross-section: The genuine product has a "wavy ring pattern", while the counterfeit product has no regularity or texture

Cutting the Cistanche tubulosa longitudinally and observing the texture of the cross-section is the core basis for distinguishing between genuine and counterfeit products. The cross-sectional characteristics of different varieties vary significantly:

Cistanche tubulosa slice

Authentic Cistanche tubulosa: The cross-section of Cistanche tubulosa is brown in color, with light brown point-like vascular bundles arranged in wavy rings (commonly known as "chrysanthemum hearts"). The texture of the cross-section is delicate, sticky, oily, and glossy. The cross-section of Cistanche tubulosa is granular, ranging from gray brown to gray brown, with scattered punctate vascular bundles. There are no obvious wavy rings, but there are still clear punctate vascular bundles distributed.

Counterfeit product: The cross-section of Lockyang is light brown or brownish brown, with yellow triangular vascular bundles, no wavy ring patterns, and obvious "tendon like" fibers; The cross-section of plants in the genus Ophiopogon has irregular texture and loose texture; The vascular bundles on the cut surface of Cistanche tubulosa are polygonal in shape, which is completely different from the wavy or scattered point like vascular bundles of the authentic product; The fake section of dried sweet potato has no vascular bundle texture, presenting a uniform brown color and a soft texture.

Smell and taste: The genuine product is "sweet with a slight bitterness", while the counterfeit product has a strange odor

Odor and taste are the key to final confirmation, especially in eliminating inferior products that are passed off as good. When tasting, take a small amount of cross-section and do not swallow:

Harvest of Cistanche tubulosa

Authentic Cistanche tubulosa: It has a slight aroma, with a faint herbal fragrance or earthy smell when smelled closely, and no pungent odor; Take a small amount of cross-section to taste. The taste is sweet with a slight bitterness, delicate in texture, and has no astringency. High-quality products may also have a slight oily sensation. Jiucong slices have a slight aroma of wine, with a sweet and slightly bitter taste.

Counterfeit products: Lockyang has a sweet and astringent taste, no sweetness, and a slight odor; The plants of the snake vine genus have a mild aroma, with a sweet and bitter taste, but without the authentic sweet and slightly bitter taste; Dried sweet potato dye counterfeit has a sweet potato flavor and a sweet taste, without any medicinal taste; The counterfeit products have a mixed odor, which may be mixed with the peculiar smell of other medicinal herbs.

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Identification of Smoked Cistanche tubulosa (4-step screening to avoid health hazards)

Sulfur fumigation is a fraudulent method used by some merchants to make Cistanche tubulosa brighter in color, longer in storage, and less prone to insect infestation. However, excessive sulfur dioxide residue can damage the effective ingredients of the medicinal herbs, and long-term use can damage the respiratory tract, liver, and kidneys. Smoked Cistanche tubulosa can be quickly identified through the four-step method of "seeing, smelling, tasting, and testing". Remember the mnemonic: "If the color is too white, the taste is too sour, and it doesn't spoil for a long time, be careful".

Watch the color: Beware of "unnatural brightness."

The core purpose of sulfur fumigation is to "whiten" and "preserve color", so the color of sulfur-fumigated Cistanche tubulosa is significantly different from the natural color of the authentic product.

Authentic Cistanche tubulosa: It has a natural color, appearing brown, gray brown, or black brown (Yan Dayun), with slight uneven shades, and has a warm and natural drying sensation, without dazzling luster.

Smoked Cistanche tubulosa: The color is too white, bright, or uniform, as if it has been bleached; some appear pale yellow or abnormally golden, without the natural warmth of color, and may even have a "reflective" feeling. Some heavily sulfur-smoked Cistanche tubulosa may have a slight white powder (sulfur residue) on the surface.

Smell: The pungent sour taste is' ironclad evidence.'

This is the most direct and effective method to identify smoked Cistanche tubulosa, with a focus on smelling the odor inside the cross-section and sealed packaging.

Authentic Cistanche tubulosa: It only emits a faint medicinal fragrance, earthy or alcoholic aroma (Cistanche tubulosa), without any pungent odor.

Smoked Cistanche tubulosa: Upon closer inspection, there is a distinct pungent sour or pungent sulfur odor, similar to the smell after setting off firecrackers; Part of the surface has a lighter odor, and the pungent smell on the broken section will be more pronounced. If the packaging is sealed, a strong sour smell can be smelled upon opening, which persists for a long time.

Taste: Beware of abnormal sour taste

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On the premise of ensuring safety, take a small amount of cross-section and taste it (spit it out after tasting) to further confirm whether sulfur is smoked:

Authentic Cistanche tubulosa: Sweet and slightly bitter in taste, delicate in texture, without any sour, astringent, or numbing sensation.

Smoked Cistanche tubulosa: In addition to the medicinal herb's own taste, there will be a noticeable sourness, and some parts may also have a tingling sensation. The tongue may experience temporary discomfort, and in severe cases, there may be a "burning tongue" sensation.

Testing: Further verification through simple operations

If there are still doubts, simple water immersion or ventilation tests can be used to assist in judgment, with simple operation and no cost:

• Water immersion test: Take a small amount of Cistanche tubulosa slices and put them into clean water. Genuine Cistanche tubulosa will slowly release color, and the water quality will be light brown, clear without turbidity. After soaking smoked Cistanche tubulosa in water, the water may quickly become turbid or exceptionally clear (sulfur dioxide dissolves in water to form sulfurous acid, which has a bleaching effect). After soaking for a period of time, the water will have a slight sour taste.

Ventilation test: Spread out the Cistanche tubulosa and let it air dry in a well-ventilated area for 1-2 days. There is no significant change in the authentic scent. The pungent sour taste of smoked Cistanche tubulosa will gradually evaporate, and the odor will become lighter and even reveal its original dry and dull color.

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Ultimate Reminder for Choosing Avoiding Pits

In addition to mastering the above identification methods, it is also important to pay attention to the following three points when purchasing, and avoid counterfeit and smoked sulfur products from the source:

1. Identify the real estate area and legitimate channels: Authentic Cistanche tubulosa is best found in the Hetian real estate area in Xinjiang, which is protected by geographical indications and has a much higher content of active ingredients than ordinary production areas; Prioritize selecting legitimate brands with traceable source code and the ability to provide third-party testing reports, and reject "three no" products and low-priced bulk goods.

2. Beware of price traps: The planting, harvesting, and processing costs of high-quality Cistanche tubulosa in Hotan, Xinjiang, are high, and the market price is usually between 200 and 500 yuan/500g. Products priced below 150 yuan/500g should be cautious, as they are likely to be smoked sulfur products, fast-growing products, or counterfeit products.

3. Refuse products that are overly aesthetically pleasing: Natural Cistanche has uneven color, slight differences in shape, and may have fallen scales and leaves, all of which are normal; If the color of Cistanche tubulosa is uniform, the surface is smooth, there are no defects, and the price is low, it is likely to be inferior products treated with sulfur fumigation or dyeing.