Morpho-biochemical characterization of Psidium species

Several Psidium species are available with many important traits, lack of intensive characterization limits their use in guava improvement. Therefore, the present study was carried out to characterize five wild Psidium species (P. molle, P. chinensis, P. guineense, P. cattleianum var. cattleianum and P. cattleianum var. lucidum) and two P. guajava genotypes (cv. ‘Arka Poorna’ and ‘H 12-5’), based on morphological and biochemical traits. Among morphological traits, fruit weight was ranged from 5.22 g (P. cattleianum var. cattleianum) to 225.14 g (‘H 12-5’), however, among biochemical traits, highest TSS (12.06 ºBrix) and total sugars (9.98%) were recorded in cv. ‘Arka Poorna’, while, lowest recorded in P. cattleianum var. lucidum. Highest ascorbic acid was recorded in P. chinensis (205.33 mg/100 g), whereas, lowest recorded in P. guineense (60.83 mg/100 g). A positive correlation was observed among wild Psidium species but none had correlation with P. guajava genotypes for quantitative traits

Depression, anxiety and stress among postgraduate students in Faculty of Education of a public university in Malaysia

Introduction: Psychological problems like anxiety, depression and stress significantly exacerbate the pressure on students to perform better. These factors collectively hamper their performance leading to low academic achievement especially among postgraduate students who majority of them are working and married. This study aims to identify the level of depression, anxiety and stress among postgraduate students, and to investigate the correlation between depression, anxiety and stress based on gender, marital status and age. Methods: The study was a quantitative survey and correlational research design using a clustered random sampling, selected from all postgraduate students (179) in Faculty of Education. The DASS-21 was used as measuring tools for depression, anxiety and stress among post-graduate students. Results: Findings of the study revealed that majority of the respondents are having moderate level of depression, anxiety and stress. Meanwhile, there were strong correlations between depression, anxiety and stress. However, there were no significant differences for level of depression, anxiety and stress based on demographic factors (gender, marital status and age). Conclusion: Based on the findings, it can be concluded that depression, anxiety and stress are strongly correlated. This study can give some insight to the educators, universities administration as well as students’ family to develop common intervention on how to curb depression, anxiety and stress among postgraduate students

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Not AvailableRole of fruit maturity, postharvest ripening and seed extraction techniques on seed quality of papaya (Carica papaya L.) cv. Surya was studied. The seeds extracted from ¾th ripe fruits onwards showed significantly higher 100 seed weight, germination and vigour compared to the seeds from early harvested fruits. However, half ripe fruits showed good germination and vigour when they were kept for postharvest ripening for 6 days. The best stage of fruit harvest for obtaining best quality seed was when the ¾th of the fruit skin turned yellow. The seeds from these fruits not only gave better germination and vigour but also showed better storability compared to the seeds extracted from the fruits of early harvested. Fermentation for 24-48 hr was found ideal for easy removal of sarcotesta, the mucilage surrounding the seed surface, without affecting the quality of the seed.Not Availabl

Comparative effect of different sugars instigating non-enzymatic browning and Maillard reaction products in guava fruit leather

Browning is a major quality deterioration process affecting both visual colour and nutritional value of guava leather. The aim of the study was to determine the role of different sugars viz., sucrose, fructose, glucose and sorbitol in non-enzymatic browning and antioxidant activity of guava fruit leather. The total free amino acids, ascorbic acid and antioxidant activities were at significantly lower levels in glucose and fructose treated guava leather, while the sorbitol added samples had all of above parameters at the highest level; while a reverse trend was observed in browning index and non-enzymatic browning. Among the browning intermediate products, Hydroxymethylfurfural was present at higher concentration (12.80-32.32 ng/g) than furfural (0.29-0.95 ng/g) in guava leather samples. Among the treatments, hydroxymethylfurfural was found lowest in sorbitol (12.8 ng/g) and highest in fructose (32.3 ng/g). In brief, this paper describes a novel effort in bringing the in-vitro studies related to sugars and total free amino acids, influencing the biochemical and nutritional attributes which are responsible for browning in guava fruit leather

Appemidi The Specialty Pickling Mangoes of Karnataka

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A Neural Network-Based Prediction of Superplasticizers Effect on the Workability and Compressive Characteristics of Portland Pozzolana Cement-Based Mortars

Portland Pozzolana Cement (PPC) mortars are predominantly employed in plastering works to achieve better workability, superior surface finish, and higher fineness to offer better cohesion with fine aggregates than the ordinary Portland cement (OPC) mortars. To achieve high performance in the cement mortar similar to cement concrete, the addition of a superplasticizer is recommended. The present study investigates the impact of addition of sulphonated naphthalene formaldehyde- (SNF)-based (0.5%, 0.6%, 0.7%, and 0.8%) and lignosulphate- (LS)-based (0.2%, 0.3%, 0.4%, and 0.5%) superplasticizers on the workability and compressive strength characteristics of PPC mortars. Plastering mortars of ratio 1 : 4 were prepared with natural sand and manufacturing sand (M sand) as fine aggregates. A flow table test was conducted on all the mortar mix proportions, and the effects of the inclusion of superplasticizers on flow properties were recorded at different time intervals (0, 30, 60, 90, and 120 minutes). PPC mortar cubes were prepared, cured, and examined to assess the inclusion of chemical admixtures on compressive strength at different ages (1, 3, 7, 14, and 28 days). The experimental findings from the workability and compressive strength of PPC mortars were analyzed, and the corresponding results were predicted using artificial intelligence. Experimental investigations demonstrated that the desired flow characteristics and higher compressive strength results were achieved from a 0.7% dosage of ligno-based superplasticizer. The predicted workability and compressive strength results at various ages acquired by implementing an Artificial Neural Network (ANN) were found to be in close agreement with the experimental results