Cassia gum
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Description
The food additive E427, known as cassia gum, is a natural thickener and gelling agent obtained from the endosperm of seeds of Cassia obtusifolia and Cassia tora, leguminous plants native to Asia.
Industrially, the seeds are ground and subjected to a hot water extraction process, followed by filtration and spray drying to obtain a fine powder of light beige color. Chemically, cassia gum is a galactomannan composed of a linear mannose chain with galactose branches in a mannose-to-galactose ratio of approximately 3:1. This structure gives it high water-holding capacity and the ability to form gels in the presence of other hydrocolloids such as xanthan gum or carrageenan. Its main function is to thicken, stabilize, and improve the texture of foods, preventing syneresis and providing a creamy mouthfeel.
The history of its use dates back to traditional Asian cuisine, but its approval in the European Union as a food additive occurred after the evaluation by the European Food Safety Authority (EFSA) in 2010, which established that there is no need to set an acceptable daily intake (ADI) due to its low toxicity and because it does not accumulate in the body. The World Health Organization (WHO) has also evaluated it, concluding that it is safe for human consumption in the amounts used.
Regarding food safety, EFSA has indicated that cassia gum presents no genotoxic or carcinogenic risks, and animal studies show no significant adverse effects. On labeling, it must appear as "cassia gum" or "E427". It is important to note that, although it is a safe additive, some people may experience mild digestive discomfort if consumed in large amounts, but this is not considered a serious adverse effect.
In summary, cassia gum is a natural thickener widely used in the food industry, with a favorable safety profile supported by major regulatory agencies.
Cassia gum (E427) is mainly used as a thickener, stabilizer, and gelling agent in a wide variety of foods. According to EC Regulation 1333/2008, it is authorized in the European Union in categories such as dairy products (yogurts, dairy desserts, ice cream), sauces and condiments, bakery products, milk-based beverages, and processed meat products. Maximum use levels vary by product: for example, in ice cream up to 5 g/kg is allowed, in sauces up to 10 g/kg, and in fermented dairy products up to 5 g/kg.
In the Spanish market, it is commonly found in artisanal ice creams, Greek yogurts, salad dressings, and industrial bakery products. Comparatively, the US FDA classifies it as "Generally Recognized as Safe" (GRAS) without specific limits, while in Japan it is permitted as a thickener in processed foods.
The versatility of cassia gum allows its use in combination with other hydrocolloids to improve the texture and stability of foods, especially in low-fat products where it is needed to mimic the creamy sensation of fat.
Cassia gum (E427) has been evaluated by EFSA and WHO, concluding that it is safe for human consumption in the amounts used in foods. Toxicological studies have shown no significant adverse effects, nor genotoxicity, carcinogenicity, or reproductive toxicity. In humans, consumption of large amounts (higher than usual) may cause mild gastrointestinal discomfort such as flatulence or diarrhea due to its fibrous nature and water-holding capacity, but these effects are transient and not considered serious.
No specific allergies to cassia gum have been documented, although people with legume allergies could have cross-sensitivity, though this is rare. No interactions with medications are known. EFSA established that it is not necessary to set an acceptable daily intake (ADI) because the estimated dietary exposure is well below levels that could cause adverse effects.
In conclusion, cassia gum is a safe additive, and documented side effects are minimal and related to excessive consumption unlikely in a normal diet.
- Cassia gum
- Cassia tora gum
- Cassia obtusifolia gum
- Cassia galactomannan
- Cassia seed extract
- Purified cassia gum
- Cassia seed flour
- Cassia polysaccharide
- Food-grade cassia gum
- Plant-derived galactomannan
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