Raduan, Feadlind Dammia (2020) Dietary fiber of md2 pineapple (Ananas comosus (L.) Merr.) wastes and its resistance towards α-amylase and stomach acid juice in-vitro. [Project Paper] (Submitted)
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Abstract
Pineapple (Ananas comosus (L.) Merr.) is the only important fruit crop in the family of Bromeliaceae as it is beneficial from the economical perspective. However, up to 80% of pineapple fruit is discarded as waste which resulted in high biological oxygen demand (BOD) and chemical oxygen demand (COD) values. However, pineapple wastes such as crowns and peels can be advantageous according to the literature reviews. One of them was due to their nutritional value, they can eventually be incorporated into food products. So, this study was conducted to determine the dietary fiber of MD2 pineapple’s crown and peels and its resistance towards α-amylase and stomach acid juice in-vitro. Both pineapple crowns and peels were collected at the Revenue Collection Center, Serdang Agriculture Department. Next, they were cut, cleaned, oven-dried, homogenized and analyzed for the dietary fiber content by using enzymatic-gravimetric method and the digestibility of sugar by using phenol-sulphuric acid. The total dietary fiber (TDF), insoluble dietary fiber (IDF) contents and α-amylase enzyme digestibility were significantly different (p<0.05) between both samples where crowns had higher amount than the peels. However, the soluble dietary fiber (SDF) content and simulated gastric juice digestibility were not significantly different (p>0.05) between both samples. As for the correlation between dietary fiber and digestibility, IDF and TDF were significantly and negatively correlated with the sample resistance towards α-amylase enzyme activity. So, the higher the IDF and TDF content, the lower the digestibility indicated that the samples had higher ability to resist the enzymatic activities. Therefore, both samples should be taken into consideration for incorporation into foods as they contain dietary fiber, specifically IDF which is higher in the pineapple wastes. Also, both samples would be a good source of prebiotics as they fulfilled the first criteria of a prebiotic which is the ability to resist the host digestion, as more than 80% of the samples were resistant towards the α-amylase enzyme and the simulated gastric juice. Overall, this study shows that the pineapple wastes have a tremendous potential to be converted into value-added food products.
| Item Type: | Project Paper |
|---|---|
| Faculty: | Faculty of Medicine and Health Science |
| Depositing User: | Ms Norafizah Radzuan |
| Date Deposited: | 04 Sep 2023 04:17 |
| Last Modified: | 04 Sep 2023 04:17 |
| URI: | http://psaspb.upm.edu.my/id/eprint/1267 |
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