Showing 4 results for Prata
G. G. B. Prata, K. Oliveira de Souza, M. M. A. Lopes, L. S. Oliveira, F. A. S. Aragao, R. E. Alves, S. M. Silva,
Volume 19, Issue 4 (7-2017)
Abstract
The aim of this study was to evaluate thirteen cultivars of roses for nutritional composition, bioactive compounds and total antioxidant activity. Attaché cultivar had the highest amounts of proteins and total fiber. Regarding color,Avalanchepresented values for internal cromacity around 7 fold higher than Attaché cultivar. The results showed that the evaluated roses presented means of bioactive compounds as ascorbic acid (70.47 mg 100 g-1), yellow flavonoids (35.25 mg 100 g-1) and total anthocyanins (150.40 mg 100 g-1). The evaluated roses presented relatively low content of total carotenoids (1.25 mg 100 g-1), and high content of total polyphenols (1565 mg 100 g-1) and antioxidant capacity (260 µM trolox g-1). Avalanche, Prima Donna, Dolce Vita, Salmone, and Elisa cultivar presented the minor Euclidean distance. The petals of the evaluated roses are excellent sources of nutritional compounds and antioxidants.
Volume 21, Issue 150 (August 2024)
Abstract
This study aimed to evaluate the effect of bay leaf (Syzygium polyanthum) infusion on preserving the quality of corn during storage. The research employed an experimental approach using a Completely Randomized Design (CRD) with five treatments and four replications. The treatments included A (control corn), B (25% (v/v) bay leaf infusion), C (50% (v/v) bay leaf infusion), D (75% (v/v) bay leaf infusion), and E (100% (v/v) bay leaf infusion). The observed variables included damaged kernels, mouldy kernels, moisture content, and aflatoxin content. Corn with high aflatoxin content was immersed in bay leaf infusion according to the respective treatments and then stored for four weeks. The research results showed that soaking corn with high aflatoxin content in bay leaf infusion (had a significant effect (P<0.01) on moisture and aflatoxin content but did not have a considerable impact (P>0.05) on damaged kernels and mouldy kernels. Based on the research findings, it was concluded that the application of 100% (v/v) bay leaf infusion improved the quality of corn during a 4-week storage period, with the percentage of damaged kernels at 4.75%, mouldy grains at 0.75%, moisture content at 14.60%, and a decrease in aflatoxin content by 41.11% (150-88.33 ppb).
Volume 21, Issue 155 (12-2024)
Abstract
Pado is a typical fermented fish from West Sumatra with a mixture of Simauang seed meat (Pangium edule Reinw) and coconut dregs covered with plastic for 4 to 8 days. Pado has good nutritional value and is thought to have a lactic acid bacterial activity to be used as a probiotic-producing functional food. Therefore, this study aims to determine the molecular isolation and identification of LAB types found in Pado fish using the 16S rRNA method. The research method is a descriptive method and laboratory analysis. The sample used as material for this research is Pado fish from Lubuk Basung District, Agam Regency, West Sumatera. The analysis related to probiotic characteristics includes total colonies of lactic acid bacteria, gram staining, acid resistance, resistance to bile salts, antimicrobial activity using test bacteria Escherichia coli O157, Staphylococcus aureus, Salmonella sp, and Listeria monocytogenes, as well as molecular sequential analysis using the 16S rRNA gene and phylogenetic diversity analysis using MEGA software version 7.0. The results showed that the total lactic acid bacteria is 7.3x107 CFU/gr; the seven isolates will be identified as gram-positive. Viability to gastric pH resistance ranged from 7.63-61.31%, and viability to bile salt resistance ranged from 22.86-71.05%. Three isolates had antimicrobial activity against E. coli, S. aureus, Salmonella sp., and L. monocytogenes. Molecular analysis using the 16S rRNA gene showed that PDY1 isolate is similar to Pediococcus acidilactici.
Volume 21, Issue 155 (12-2024)
Abstract
Tiger shrimp (Panaeus monodon) is a key fishery product in East Kalimantan, Indonesia, distributed within 12 hours by land routes, leading to quality deterioration due to microbial contaminants. This study aims to analyze the presence of microbial contaminants in tiger shrimps and detect risk factors that cause the presence of bacterial contaminants in shrimp. The sampling used in this study was a purposive sampling of tiger shrimp based on three organoleptic quality categories (good (1), moderate (2), and poor (3)) and analyzed with several specific mediums. Risk factor observations were made during the handling process. The highest total bacteria and coliforms were found in shrimp 3, at 30.25x106 cfu/g and >1100 MPN/g, respectively. Based on the distribution of bacteria in each shrimp, shrimp 2 and 3 were contaminated by 6 types of bacteria: Pseudomonas sp., Aeromonas sp., Salmonella/Shigella, Klebsiella sp., E. coli, and S. aureus. E. coli, Klebsiella sp., and Salmonella/Shigella bacteria were not found in shrimp 1. The presence of these bacteria plays a role in tiger shrimp deterioration. The presence of bacteria on the shrimp is caused by the equipment and materials used, worker behaviour, and environmental conditions that do not pay attention to hygiene during the tiger shrimp handling process. These results suggest that the long distribution process of tiger shrimps, coupled with poor handling, leads to bacterial contamination, resulting in quality degradation in the form of tiger shrimp spoilage, requiring a particular strategy to minimize bacterial contamination.
