Mushrooms for integrated and diversified nutrition

            Mushrooms were considered as “Objects of mystery” by the primitive man, and were realized as food much before civilization. Mushrooms have been variously used in different cultures from being priced as “Food of Gods” in the Roman culture to tools of psychological sedation for the Mexican warriors. Most of the edible mushrooms are saprophytic growing on decomposed organic plant matter. Mushrooms play varied and important roles in human nutrition and health. They are unique nutrition dense vegetables with quality high protein, very low fat, zero cholesterol, low carbohydrates, low glycemic index, high fiber, good cardiac friendly sodium to potassium ratio and some unique bioactive compounds like ergothioneine and polysaccharides. These unique nutritive properties of mushrooms make them a recommended food for diabetics, body weight management, hypertension and cardiac well-being. The concept of selenium rich mushrooms for slowing down the progress of AIDS has been gaining importance in the recent years. Apart from being a healthy vegetable, the unique lignocellulosic waste-based production system of mushrooms makes them the most ecofriendly zero waste green technology with immense environmental benefits (Gupta et al., 2004, Jain et al., 2014 and & Pandey et al., 2014). Despite many environmental and nutritional benefits; mushrooms yet have not become a part of daily nutrition in the Indian diet and the per capita consumption still remains very low at 70 grams per annum. There is a need to educate and enhance the awareness among the people about the nutritional and health potential of mushrooms. There is also the need to draw the attention towards integrating mushroom technology in successful agro-residue management programs, livelihood programs, national nutrition programs and women empowerment and rural development schemes which ultimately culminate in providing better daily nutrition

Weed seed bank and weed population as influenced by weed management practices in rice var Co 54

Weed seed bank in soil serves as the reservoir of weed seeds which emerge whenever conditions become conducive and affects crop growth.  In the present study, a field experiment was performed at Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai, India, during Kharif 2021 and Rabi 2022 to determine weed seed bank present in soil by direct seed extraction using the sieving method at discrete depths of 0-5 cm, 5-10 cm and 10-15 cm after rice harvest with reference to different weed management practices imposed and its effect on weed population in succeeding crop. The average proportion of weeds that emerged in the field ranged from 9 to 38 % of the total weed seed bank. Weed management practices followed during the preceding crop greatly influenced weed seed germination. The higher weed seed reserve (1384 m-2) and consequent weed population (528 no’s m-2) were found at a depth of 0-5 cm in unweeded plots. The lower weed seed density (536 m-2) and weed population (94 no’s m-2) were found in pre emergence application of Pyrazosulfuron + Pretilachlor and early post emergence application of Bispyripac sodium. The results from the present study confirmed that herbicide treatment considerably minimized the weed seed density and population, which will assist in predicting weed infestation and appropriate timing of weed control

A digital literacy model to narrow the digital literacy skills gap

The concept of digital literacy is increasingly prevalent in the 21st century. Growing demands from the work sector for individuals to be digitally literate has prompted targeted interventions and innovations from the education sector to instil digital skills into the future workforce. However, despite efforts the digital skills gap remains visible globally. This paper explores the prominent educational frameworks and models, their advantages and limitations in 21st-century learning and teaching. Furthermore, a new innovative digital literacy model has been proposed to be integrated into the existing and future education frameworks and models to assist educationists in narrowing the digital skills gaps and preparing graduates for the work sector. The digital literacy model consists of two components: (1) the digital literacy framework- South Pacific Digital Literacy Framework (SPDLF) and (2) the digital literacy tool. The SPDLF reflects six major literacies identified for the 21st-century while the digital literacy tool--digilitFJ consists of a digital literacy measuring scale and an online intervention program. The exploratory factor analysis showed that the SPDLF was valid. On the other hand, heuristics, student attitude, and satisfaction and effectiveness of the digital literacy tool were also evaluated from the student's perspective to reflect its usefulness. The survey results also showed a positive attitude and perception of the use of the tool. Additionally, Cohen's d value showed that the digital literacy tool was effective. Therefore, if the tool is implemented and adopted, it can narrow the existing digital skills gap in the South Pacific

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

Optimization of factors influencing osmotic dehydration of aonla (Phyllanthus emblica L.) segments in salt solution using response surface methodology

Optimization of process parameters is a critical requirement in food processing and food product industries for the development of highly acceptable product. Quantification of mass transfer kinetics under different processing conditions is essential step for optimizing the osmotic dehydration process. A Box-Behnken Design (BBD), adopted from response surface methodology (RSM) approach was used for evaluating and quantifying the moisture loss and solids gain kinetics of aonla segments in salt solution during the osmotic dehydration process. The independent variables were fixed at three levels (salt concentration- 2, 4, 6%; processtemperature - 45, 50, 55 OC and process time - 60, 120, 180 minutes). The process responses were water loss percentage (WL%) and solids gain percentage (SG%). Validation experiments were conducted at optimum conditions to verify predictions and adequacy of the models. The optimum conditions predicted were 5.02% salt concentration, 54.8 OC temperature and 60.64 minutes process time to attain a desired effect of maximum water loss (6.42%) and minimum solid gain (1.09%) in osmotic dehydration of aonla in salt medium

Essaying the design, development and validation processes of a new digital literacy scale

Purpose The emergence of new digital technologies in the 21st century has propelled individuals to use technology in their daily lives. Individuals now require a specific set of skills, competencies and knowledge to use these devices efficiently, intelligently yet with responsibility. The purpose of this research was to design, develop and validate a digital literacy scale (DLS) using the exploratory factor analysis (EFA). Design/methodology/approach A quantitative research methodology was used for this study, whereby a unipolar 5 point Likert scale self-report questionnaire was designed to measure the digital skills of the participants. Digital literacy was divided into an exhaustive and broad list of six modules-media literacy, information literacy, communication literacy, technology literacy, visual literacy and computer literacy. The questionnaire was administered to a sample of the 2,755 Year 12 and Year 13 students of randomly selected 33 secondary school students in Fiji. Sample adequacy of the sample was tested using the Kaiser-Meyer-Olkin test. Findings The EFA results prove the existence of the six modules of digital literacy that are being utilized in this research to design the DLS. The factor loadings or the correlation coefficients range from 0.3 to 0.8; therefore, all the 60 items were kept to design the DLS. The Cronbach Alpha value of 0.90 confirmed the internal consistency and reliability of the newly designed DLS. Research limitations/implications The research limitation of the study was the sample size. A broader sample would have made the results better. Research implications are; there is no scale in the south Pacific to measure digital literacy. The newly designed and developed scale is the first one that can be used to measure the digital literacy of the south Pacific populace and bridge the gap of the digital divide. Practical implications The developed and validated scale can be used to measure the digital literacy of individuals both in the south Pacific and beyond. The scale covers important aspects of the much needed 21st century skills. Once digital literacy is measured, relevant stakeholders can develop instruments to improve the digital literacy of individuals. Social implications The DLS can prove to be an important tool for society. In the 21st century people are required to have digital literacy to survive and thrive. Thus this tool can be used to measure digital literacy and further improve the digital literacy of the people. Originality/value The framework has been adopted from the work of Covello (2010) however, the definitions of digital literacy and other literacies are modified to meet the requirements of the 21st century. The tool is unique in its nature in the south Pacific and beyond. Looking at the digital literacy tools in literature, this tool covers all the aspects of digital literacy in the 21st century

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Not AvailableIntroduction – An attempt was made to analyze the morphological and molecular diversity in avocado (Persia americana Mill.) populations collected from different regions of India, using multivariate. Materials and methods – Morphological traits were recorded and evaluated for variance and mean comparisons. The top four traits contributing to economic value were used to arrive at selection of plus trees for further use. Sequence Related Amplified Polymorphism (SRAP) molecular markers were used for generating information on genetic variation and relationships among the accessions. Results and discussion – Significant variation was found in fruit-related morphological characters and fruit quality traits. The different avocado accessions were successfully categorized through combined analysis into various clusters based on genetic diversity and also established relatedness among them. Conclusion – This work would go a long way in characterization, identification and selection of parents in breeding programmes of this exotic crop.Not Availabl