Similar to ingredients such as glycolic acid, the bromelain in pineapple breaks down proteins that hold skin cells together. This may sound a little scary. But this process sheds dead skin cells. Papain vs. Bromelain for Skin workers sensitized to papain, and 8/60 had positive RAST results to bromelain (Baur and Fruhmann, 1979)

Braun JM, Schneider B, Beuth HJ. Therapeutic use, efficiency and safety of the proteolytic pineapple enzyme Bromelain-POS in children with acute sinusitis in Germany. In Vivo. 2005;19:417–421. Decreased Inflammation Like other types of fruit, pineapple is high in antioxidants, a feature that may reduce inflammation in the body. workers sensitized to papain and 60 asthmatics workers not exposed to airborne proteases but probably to these as constituents of foods (Baur and Fruhmann, 1979)

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Allergen purification: The recombinant pineapple profilin has been expressed in E. coli and purified by affinity chromatography using poly-(L)-proline as the solid phase. (Reindl et al. 2002) Macrodilution Assay. For the macro dilution assay of the chitosan-PPE films, briefly all the three films (6 mm in diameter) were placed in sterile tubes containing 5 ml of sterile tryptose soy broth. After 15 min of duration, the tubes were inoculated with the 10 5 colony-forming unit (CFU) mL −1 of bacterial inoculums and incubated at 37°C for 24 h. A 0.1 ml of an aliquot from these tubes were subcultured on TSA plates, and the plates were incubated for 37°C for 24 h [ 31]. The results were expressed as CFU/ml compared to the control sample (sterile filter paper disc). All the experiments are done in triplicate and inhibition growth was calculated as log reduction using the following equation: where Log No is the initial viable cell count and Log N is the final viable cell count. 2.9. Statistical Analyses

Aside from the abovementioned options, you can also use apricot and peach juices with the addition of a few drops of lemon or lime juice. Passali D, Passali GC, Bellussi LM, et al. Bromelain’s penetration into the blood and sinonasal mucosa in patients with chronic rhinosinusitis. Acta Otorhinolaryngol Ital. 2018;38(3):225-228. doi:10.14639/0392-100X-1693 Bromelain is an enzyme extract derived from the stems of pineapples, although it exists in all parts of the fresh pineapple. [1] The extract has a history of folk medicine use. As an ingredient, it is used in cosmetics, as a topical medication, and as a meat tenderizer. [1]a b c Ketnawa S, Chaiwut P, Rawdkuen S (2012). "Pineapple wastes: A potential source for bromelain extraction". Food and Bioproducts Processing. 90 (3): 385–391. doi: 10.1016/j.fbp.2011.12.006.

Bromelain, a group of pineapple proteolytic complex enzymes (ananas comosus) and their possible therapeutic and clinical effects. A summary. (2021). Grapefruit juice. As grapefruit juice has both sweet and sour flavor notes, it can be a good substitute for pineapple juice. Grapefruit juice also has as many health benefits as pineapple juice. Protocol: (controls, definition of positive etc) Histamine chloride (0.1%) and NaCl (0.9%) were used as positive and negative controls, respectively (Nettis et al. 2001)Pineapples are low in calories (kcal) but highly nutritious. Just 1 cup (165 grams) of pineapple chunks contains the following nutrients:

Though the fresh sort is available year round at my local garage, most recipes remain loyal to tinned pineapple in either juice or syrup: Nigella Lawson, who admits in Nigella Express that she has only “vague nursery memories” of pineapple upside-down cake, goes as far as to say she feels it “slightly bad sport to start peeling and slicing your own pineapple”. Only the recipe in Jamie Oliver’s Comfort Food calls for fresh fruit. A 0.1 ml of film solution (obtained by soaking 125 mg chitosan–PPE film in 15 ml ethanol/methanol for 24 h) was used for the analysis of antioxidant activity [ 29]. Antioxidant activity of both CH-PEE and CH-PME film solutions was evaluated by DPPH, ABTS, and CUPRAC assays. 2.8.2. Antimicrobial Assessment of Chitosan-PPE Films

The DPPH free radical scavenging activity was measured according to the methodology [ 25]. Briefly, 100 μl of PPEs were mixed with 3.9 ml of 0.1 mM DPPH ethanolic/methanolic solution. The solutions were shaken vigorously in a vortex and incubated for 30 min in the dark at room temperature. The absorbance was measured at 517 nm. 2.5.2. ABTS Radical Scavenging Assay What makes these two fruits interchangeable in certain recipes is their flavor. Both green apple and pineapple have sweet and tart flavor notes. Though nectarines also have tangy flavor notes like pineapples, you may find their tanginess not sufficient for the particular recipe. This is good or bad depending on your preferences, but we generally recommend natural extracts for baking as it’s a lot easier to balance their flavors in your dishes, and we’re not fans of artificial ingredients.