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Total Phenolic Content and Antioxidant Capacity of Dunaliella salina Were Cultivated Under Stress Conditions on Salt Field Media
Trung Vo,
Dung Thi Ngoc Pham,
Phuc Thi Hong Nguyen
Issue:
Volume 7, Issue 2, June 2023
Pages:
20-23
Received:
19 April 2023
Accepted:
8 May 2023
Published:
17 May 2023
Abstract: Dunaliella salina (D. salina) is a unicellular green microalga with a high β-carotene content and bioactive compounds that is essential for any study of the application of microalgae. The current research aimed to evaluate total phenolic content, and antioxidant capacity of D. salina CCAP 19/18 strain in RM1 and RM2 salt field media under various stress conditions including natural light, high salinity, and nitrogen starvation. As a result, after 17 days of being enrichment, in the RM1 medium, there was no significant difference in phenolic content under natural light, high salinity, and nitrogen starvation stresses, with p = 0.305. Similarly, the antioxidant capacity had no significant difference, which was p = 0.105 (natural light with high salinity), and p=0.428 (nitrogen starvation with high salinity). While in RM2 medium, the phenolic content and antioxidant capacity under nitrogen starvation stress far exceeded that of natural light and high salinity, with respective figures being 157.147 fg acid gallic/cell and 600.443%/cell and these figures had a significant difference (p<0.05). As a consequence, we could choose an appropriate medium for cultivating and harvesting algae in a large-scale pilot. These true potential extract ingredients in algae are fascinating for cosmetic industries or used for various health benefits such as nutraceuticals and medications against damaging causes, particularly free radicals.
Abstract: Dunaliella salina (D. salina) is a unicellular green microalga with a high β-carotene content and bioactive compounds that is essential for any study of the application of microalgae. The current research aimed to evaluate total phenolic content, and antioxidant capacity of D. salina CCAP 19/18 strain in RM1 and RM2 salt field media under various s...
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Predicting 7-24 Months Childs Infectious Disease and Responsible Supplementary Food for Infectious Disease: A Machine Learning Approach
Md Nesar Uddin Sorkar,
Md. Roquib Uddin Sorkar
Issue:
Volume 7, Issue 2, June 2023
Pages:
24-29
Received:
6 February 2023
Accepted:
23 February 2023
Published:
25 May 2023
Abstract: Supplementary foods are foods that babies consume in addition to breast milk. Supplementary food is essential for a baby's health. Many malnutrition problems in babies are caused by a lack of supplementary feeding. However, not all supplementary foods are beneficial to a baby's health. The goal of this research was to identify the supplementary foods that cause infectious diseases in babies. Simultaneously, it attempted to predict infectious diseases in babies. This secondary data was collected from BDHS 2014. Here various methods such as percentage distribution, association test, logistic regression, and association rule mining have been used to find out the responsible factors for infectious diseases. At the same time, Decision Tree, Random Forest, Support Vector Machine, and Naiv Bays have been used to predict infectious diseases in babies. According to association test, association rule mining, and logistic regression, it can be said that babies who eat juices, pumpkin or carrot, liver or heart, lentils or nuts, other liquids, potatoes, bread or noodles, plain water, and other foods are more likely to be infected with infectious diseases. On the other hand, babies who eat tinned milk, mango or papaya, and baby formula are less likely to get an infectious disease. Furthermore, for this data, Random Forest is the best classifier. Therefore, it can be said that these significant variables may be responsible for the infectious disease of babies. The government and numerous NGOs should make people aware of this significant supplementary food so that future generations can be disease-free.
Abstract: Supplementary foods are foods that babies consume in addition to breast milk. Supplementary food is essential for a baby's health. Many malnutrition problems in babies are caused by a lack of supplementary feeding. However, not all supplementary foods are beneficial to a baby's health. The goal of this research was to identify the supplementary foo...
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Tecoma stans Essential Oils: A Useful Additive in Food Industries
Adekemi Temitope Alade,
Sherifat Adeyinka Aboaba,
Olusegun Ekundayo
Issue:
Volume 7, Issue 2, June 2023
Pages:
30-34
Received:
2 April 2023
Accepted:
24 April 2023
Published:
31 May 2023
Abstract: Essential oils (EOs) and their constituents have been the focus of several researches because of their multiple biological activities. Among these activities are antioxidant and antimicrobial, which make EOs important material in many industries. Food industries now use EOs as food additives and also incorporate them in food packages to increase the food shelf life by preventing food spoilage caused by oxidation and microbial attacks. There are many plants bearing essential oils that are yet to be investigated. Therefore, in this study, the EOs hydrodistilled from the leaves, stem, seeds and flowers of Tecoma stans were examined for their antioxidant and antimicrobial activities using DPPH radical-scavenging assay and Agar diffusion method respectively. Data were analyzed using Graph Pad Prism software. The seed (IC50 = 33.03 μg/ mL) and stem (IC50 = 6.44 μg/ mL) EOs exhibited higher radical-scavenging potential than the EOs from the leaves (168.62 μg/ mL) and flowers (104.94 μg/ mL) as well as that of reference compound, α-tocopherol (IC50 = 81.58 μg/ mL). There was no significant activity against the bacterial but moderate inhibitions of the fungi were observed (Zones of Inhibition, 1.8-8.1 mm). Their antimicrobial activity was lower than those of the standard drugs (gentamycin, 9.0-11.5 mm; ketoconazole, 10.3-21.0 mm). No significant difference between the activity of each of the EOs against the tested organisms (P ˃ 0.05). This study showed that Tecoma stans seeds and stems EOs possess antioxidant properties which could make them useful in the food industry as food additives and food packaging materials.
Abstract: Essential oils (EOs) and their constituents have been the focus of several researches because of their multiple biological activities. Among these activities are antioxidant and antimicrobial, which make EOs important material in many industries. Food industries now use EOs as food additives and also incorporate them in food packages to increase th...
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Effect of Probiotics-Treated Moringa oleifera Leaf Meal in Exotic Layer Diets on Egg Characteristics and Consumer Acceptability
Abdou Karim Darboe,
Mary Kivali Ambula,
Anthony Macharia King’ori
Issue:
Volume 7, Issue 2, June 2023
Pages:
35-40
Received:
14 May 2023
Accepted:
5 June 2023
Published:
15 June 2023
Abstract: The study was conducted to evaluate the effect of treated MOLM in exotic layer diets on egg characteristics and consumer acceptability. Thirty-six (36), sixteen (16) week old ISA Brown layers were selected from a flock of sixty (45) birds and allocated to four dietary treatments with three replicates of three birds each, confined in a deep litter system in a completely randomised design; The treatments consisted of T1 0% MOLM, T2 10% MOLM, T3 15% MOLM and T4 20% MOLM. Data was collected on external parameters (eggshell thickness, shell weight, egg width and length, shape index) and internal qualities (yolk weight, yolk width and length, yolk ratio, yolk colour and egg weight). Data of the parameters were subjected to analysis of variance (ANOVA) using the general linear model (GLM) procedure of the statistical analysis system (SAS, 2009). Significant means were separated using Tukey's test at (p < 0.05). The results showed significant differences (p < 0.05) in all the parameters evaluated on all the birds fed on different dietary treatments; treatment 4 (20% MOLM) recorded the highest yolk colour (12) in the Roche colour fan, in comparison 10%, 15% MOLM recorded (8, and 10) respectively on the scale of the Roche colour fa n, birds fed on 0% MOLM recorded low yolk colour (1) on the Roche colour fan; The results show that 10% MOLM have a better influence in shell weight, yolk weight, and yolk ratio, while the control group record better qualities in yolk width, yolk length, It could be concluded that 10% MOLM in layers diet could improve egg qualities of Isa-Brown birds.
Abstract: The study was conducted to evaluate the effect of treated MOLM in exotic layer diets on egg characteristics and consumer acceptability. Thirty-six (36), sixteen (16) week old ISA Brown layers were selected from a flock of sixty (45) birds and allocated to four dietary treatments with three replicates of three birds each, confined in a deep litter s...
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