EFFECTS OF WATER SOAK AND LIME SOAK ON THE CHEMICAL COMPOSITIONS AND DRY MATTER LOSSES OF HIBISCUS SABDARIFFA SEEDS

Authors

  • Ibrahim, T. A. Department of Animal Science, Ahmadu Bello University, Zaria, Nigeria.
  • Abdu, S. B.
  • Hassan, M. R. National Animal Production Research Institute, Ahmadu Bello University, Shika-Zaria.
  • Musa, A.
  • Oyewo, T. O.
  • Alhabib, I. K.

Keywords:

H. sabdariffa seeds, Soaking, Chemical compositions, Anti-nutrients, Dry matter losses

Abstract

This study was carried out to assess the nutritional potential and the dry matter losses of Hibiscus sabdariffa L. seeds from two processing methods (water soak and lime soak) with each method having three different patterns in a completely randomized design (CRD). The water soak method involved three different duration of changing water (0hrs, 24hrs and 48hrs) which lasted for four days while the lime soak method involved three different inclusion levels (3%, 6% and 9%) of lime (Ca(OH)2) in clean water for 24 hrs. Results indicated that there was a significant (P<0.05) difference observed in all the parameters. The results showed that the dry matter losses in the seeds increased significantly (P<0.05) in water soak with increased frequency of water change but decreased (P<0.05) in lime soak method with higher inclusion levels of lime, water soak had more dry matter loss than lime soak due to differences in soaking duration. There was a significant (P<0.05) increase in crude proteins, nitrogen free extract and crude minerals for the two processing methods but a decrease (P<0.05) was observed for ether extract and fiber fractions. Also, while a decrease (P<0.05) was observed in phytates and tannins, no effective trend was noted for oxalates contents of the seeds for both water and lime soak methods in comparison with the raw seeds. There was an increase in Ca, P and Fe but a statistical (P<0.05) decrease was observed in Mg and K as compared to the raw seeds. It was also noted that potassium is the major mineral in H. sabdariffa seeds though, significantly reduce when processed. It was therefore concluded that both water soak and lime soak methods of processing improved the chemical compositions and reduce the tannins and phytates of H. sabdariffa seeds with some amount of losses in dry matter.

Published

2022-12-30