In general, pure pineapple powder usually contains a certain amount of bromelain, but the specific content and activity depend on the raw material part (pulp, core or stalk), processing method (such as freeze drying or spray drying) and subsequent treatment process. The following will fully explain whether pineapple powder contains bromelain.
Bromelain
Bromelain is a type of proteolytic enzyme extracted from pineapple (Ananas comosus) with protein decomposition activity. Its main component is a group of sulfase proteolytic enzymes that can hydrolyze protein molecules under mild conditions. Bromelain is widely present in the stems, fruits and juices of pineapples, especially the bromelain extracted from pineapple stems has a high content, so it is divided into two categories: stem bromelain and fruit bromelain.
Bromelain bulk powder not only has the function of protein decomposition, but also has multiple biological activities such as anti-inflammatory, anti-tumor, wound healing, improved digestive function, and anti-thrombotic, so it has received high attention in the fields of medicine, health products and food industry.
Pineapple powder
Pure pineapple powder is a powdered product made by spray drying, freeze drying or hot air drying after fresh pineapples are washed, cut, steamed or sterilized. Its main ingredients include sugars, vitamins, minerals, dietary fiber and a small amount of enzyme substances in pineapple pulp.
Bromelain Content in Different Pineapple Powder
The processing method used to produce pineapple powder directly affects whether the final product retains active bromelain.
Industrial-Grade Freeze-Dried Pineapple Powder
This type of pure pineapple powder is made using low-temperature freeze-drying technology, which sublimates frozen water in a vacuum. This method helps protect heat-sensitive components from thermal damage[4]. As a result, the active bromelain in the pineapple is largely preserved, and the product retains a certain level of enzyme activity. Freeze-dried pineapple powder is commonly used in high-end health supplements, functional foods, and natural enzyme products. It is ideal for applications where enzyme activity is an important requirement.
Food-Grade Spray-Dried Pineapple Powder
Spray drying is the most commonly used method for producing pineapple powder on an industrial scale. The process involves atomizing pineapple juice and drying it quickly at high temperatures (typically 150–180°C). While this technique is efficient, cost-effective, and capable of retaining sugar, flavor, and some vitamins, pure pineapple powder severely damages active proteins like bromelain. The high temperatures destroy the enzyme's structure, resulting in the near-complete loss of its activity. Although spray-dried powder no longer functions as a protease, it is still widely used in food additives, flavorings, and snacks due to its strong aroma and natural color.
Pineapple Enzyme Compound Powder
This type of powder is made by blending pineapple powder (with low or no enzyme activity) with externally added, high-activity bromelain-typically derived from the pineapple stem-through mixing or encapsulation. This method restores enzyme function artificially by supplementing bromelain. It is widely used in nutritional powders and functional health products, offering both good flavor and active ingredients. However, the addition of bromelain must be clearly labeled, and the product is categorized as "functionally enhanced."
Juice Powder
Pineapple Juice powder is produced by concentrating pineapple juice and then drying it after high-temperature sterilization. While it preserves flavor and some soluble nutrients, the multiple heating steps involved in production completely deactivate the protease. As a result, juice powder contains little to no active bromelain. It is mainly used in drink mixes, instant beverages, and fruit-flavored nutritional products where flavor and solubility are prioritized over functional enzyme content.
|
Type |
Processing method |
Does it contain bromelain? |
Applications |
|
Industrial grade freeze-dried pineapple powder |
Freeze drying |
✔ Yes (higher activity) |
Health products, enzyme preparations |
|
Food grade spray-dried powder |
High temperature drying |
✘ No (or very low) |
Food additives, seasonings |
|
Pineapple enzyme compound powder |
Adding exogenous enzymes |
✔ Yes (artificially added) |
Health products, nutritional powders |
|
Juice powder |
Juice concentration followed by drying |
✘ No (basically no enzyme activity) |
Beverages, instant powders |
Factors About Enzymes in Pineapple Powder
Drying Temperature
Bromelain, the main protease in pure pineapple powder, is highly sensitive to heat. When the temperature exceeds 60°C, the enzyme structure tends to denature, leading to a sharp decline in activity. Although spray drying is a rapid process, the momentary high temperatures-often above 150°C-can still cause significant enzyme deactivation[6].
pH Environment
During the pretreatment stage before drying, the pH level of the pineapple juice or slurry plays a critical role. If the pH is too acidic or too alkaline, bromelain becomes unstable. Non-neutral conditions can alter the enzyme's shape, damaging its active site and reducing its overall activity.
Oxidation
Prolonged exposure to air can trigger oxidation, which damages key functional groups in bromelain. This gradually lowers enzyme activity. If the powder is not adequately protected from light and oxygen during processing or storage, the enzyme's stability will decline further.
Carrier Addition
To enhance pure pineapple powder flow and drying efficiency, carriers like maltodextrin or gum arabic are often added. While these ingredients help with processing, they also dilute the concentration of active bromelain, reducing the amount of enzyme per unit weight and weakening its proteolytic effect.
Market Situation
The majority of pure pineapple powder available on the market is produced through spray drying. This process significantly reduces or eliminates bromelain activity. Only a small portion of freeze-dried pineapple powder may retain some bromelain activity, but the content is typically too low to meet the standards required for enzyme-based applications.
Guanjie Biotech offers pineapple powder in various specifications to meet customer needs:
•Spray-dried pineapple powder:
Ideal for use in food seasonings and beverages. This type does not contain active bromelain.
•Freeze-dried pineapple powder (customized):
Suitable for functional foods and health products. It retains higher bromelain activity.
•Bromelain powder
A pure, highly active extract specifically designed for nutritional supplements.
In summary, whether pure pineapple powder contains bromelain depends on the part of the pineapple used, the drying process, and the intended product application. Natural pineapple powder is typically made by drying pineapple pulp or juice and is rich in nutrients. However, the high temperatures involved in most drying methods significantly reduce or destroy bromelain activity.
Bromelain, a heat-sensitive protease, is mainly found in the stems and pulp of fresh pineapples. As a result, the bromelain content in most commercially available bulk pineapple powders is extremely low and lacks functional enzymatic activity. For applications requiring active enzymes, it is necessary to choose specially extracted bromelain powder or customized freeze-dried pineapple powder.
Although pure pineapple powder is not typically considered a source of active bromelain, it still offers nutritional and flavor benefits for a wide range of food and beverage applications. If you have any questions, welcome to enquiry at info@gybiotech.com.
References：
[1]Extraction and activity of bromelain from pineapple by-products - This type of study discusses bromelain extraction and enzyme activity retention in different pineapple-derived powders. (Look for articles in journals like Food Chemistry or Journal of Agricultural and Food Chemistry.)
[2]Taussig, S. J., & Batkin, S. (1988). Bromelain, the enzyme complex of pineapple (Ananas comosus) and its clinical application. Journal of Ethnopharmacology, 22(2), 191-203.
[This paper provides foundational information about bromelain's properties.]
[3]Pavan, R., Jain, S., & Shraddha, K. (2012). Properties and therapeutic application of bromelain: a review. Biotechnology Research International, 2012. [Includes discussion of bromelain stability and extraction.]
[4]"Effect of drying methods on bromelain activity in pineapple powder" - Published research analyzing how spray drying and freeze drying affect bromelain enzyme activity.
[5]Perry, N. B., et al. (2001). "Bromelain: A Protease from Pineapple (Ananas comosus) with Therapeutic Applications." Journal of Agricultural and Food Chemistry, 49(11), 5583-5590.- Discusses bromelain's sources and how processing affects its activity.
[6]Rathore, H., et al. (2017). "Stability and Activity of Bromelain Enzyme in Different Processing Conditions." International Journal of Food Science & Technology, 52(7), 1509-1517. - Explains how drying and heat treatment impact bromelain activity in pineapple products.
