In recent times, researchers have explored food derived peptides to circumvent the side effects of synthetic drugs. This study therefore examined the amino acid constituents, in vitro antioxidant activities, angiotensin-1-converting enzyme (ACE), α-glucosidase and α-amylase inhibition kinetics of protein hydrolysate obtained from the seed of Luffa cylindrica . The peptide yield by pepsin (16.93 ± 0.28%) and trypsin (13.20 ± 1.02%) were significantly lower than that of Alcalase (34.04 ± 1.96%). Alcalase hydrolysate however displayed the highest ferric reducing antioxidant capacity (FRAC), 1,1-diphenyl-2-picrylhydrazyl (DPPH) and H 2 O 2 scavenging activities (0.63%, 85.88% and 41.69% respectively), while the highest superoxide scavenging activity was shown by peptic hydrolysate (57.89%). The ACE inhibition by the hydrolysates with IC 50 of 0.32–0.93 mg/mL, increased as the concentration of the peptic hydrolysate increased with the highest ACE-inhibitory activity (74.99 ± 0.43%) at 1.2 mg/mL of peptic hydrolysate. Tryptic and Alcalase hydrloysates exhibited a strong α-amylase inhibition having 27.96 ± 0.06% and 36.36 ± 0.71% inhibitory capacity respectively with IC 50 of 1.02–3.31 mg/mL. Alcalase hydrolysates demonstrated the strongest inhibition (65.81 ± 1.95%), followed by tryptic hydrolysates (54.53 ± 0.52%) in a concentration-dependent inhibition of α-glucosidase (IC 50 , 0.48–0.80 mg/mL). Kinetic analysis showed that ACE-inhibition by different concentrations of Alcalase, pepsin and trypsin hydrolysates is uncompetitive, mixed-type and non-competitive respectively. α-Amylase was non-competitively inhibited while α-glucosidase was un-competitively inhibited by all the hydrolysates. The total amino acid concentration for Alcalase, trypsin and pepsin hydrolysates was 53.51g/100g, 75.40g/100g and 85.42g/100g of Luffa cylindrica seed protein hydrolysate respectively, with glutamate being the most concentrated essential amino acid in all the three hydrolysates. From these results, it can be deduced that Luffa cylindrica seed Alcalase and tryptic protein hydrolysates may play critical and indispensible role as bio-tools in diabetes and hypertension treatment.

The study was conducted to determine the levels of magnesium, phosphorus, potassium and calcium present in Zobo Drink consumed in Gombe metropolis. Zobo (Hibiscus sabdariffa) drink has been consumed for decades as a non-alcoholic beverage, thus, the knowledge of its nutritional value is of huge interest. Hence, it is important to determine the level of some minerals present in the beverage. Ten samples were bought from different retailers within Gombe metropolis and were digested using Aqua regia (1:3 of HNO3 and HCL) in the laboratory and the levels of the various elements in each sample were determined using Atomic Absorption Spectroscopy (AAS). The results obtained showed that the sample from Gombe State University commercial area 1 has the highest (P<0.05) magnesium content (9.38.±0.02 mg/kg). Calcium (2.90.±0.02 mg/kg) and Phosphorus (9.11.±0.02 mg/kg) were found to be highest in samples obtained from Arawa market and Gombe State University commercial area 2 respectively. Potassium was (14.45.±0.05 mg/kg) was highest in the beverage gotten from Gombe State University commercial area 2. The results showed that Zobo drink sold in Gombe metropolis possess some amount of the assayed  minerals but are lower than the Regular Dietary Intake (RDI) permissible by the World Health Organisation.