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•Three purslane cultivars grown under hydroponics conditions were studied.•The combination of 1H NMR data with statistical analysis allows to classify purslane cultivars.•Mixquic ...cultivar have the best nutritional properties.•The results obtained provide important metabolic information to classify purslane cultivars.
Purslane (Portulaca oleracea L.) has a high content of nutrients and medicinal effects that depend on the genotype, harvesting time, and production system. The objective of the present research work was to elucidate the NMR-based metabolomics profiling of three native purslane cultivars from Mexico (Xochimilco, Mixquic, and Cuautla) grown under hydroponic conditions and harvested in three different times (32, 39, and 46 days after emergence). Thirty-nine metabolites identified in the 1H NMR spectra of aerial parts of purslane, 5 sugars, 15 amino acids, 8 organic acids, 3 caffeoylquinic acids, as well as 2 alcohols and 3 nucleosides, choline, O-phosphocholine and trigonelline were also detected. A total of 37 compounds were detected in native purslane from Xochimilco and Cuautla, whereas 39 compounds were detected in purslane from Mixquic. Principal component analysis (PCA) and orthogonal partial least squares discriminant analysis (OPLS-DA) separated the cultivars into three clusters. Mixquic cultivar had the highest number of differential compounds (amino acids and carbohydrates), followed by Xochimilco and Cuautla cultivars, respectively. Changes in the metabolome were observed in latest times of harvest for all the cultivars studied. The differential compounds were glucose, fructose, galactose, pyruvate, choline, and 2-hydroxysobutyrate. The results obtained in this investigation may contribute to selecting the best cultivar of purslane and the best time in which the levels of nutrients are optimal.
Growing plants in the gulf region can be challenging as it is mostly desert, and the climate is dry. A few species of plants have the capability to grow in such a climate. However, those plants are ...not suitable as a food source. The aim of this work is to design and construct an indoor automatic vertical hydroponic system that does not depend on the outside climate. The designed system is capable to grow common type of crops that can be used as a food source inside homes without the need of large space. The design of the system was made after studying different types of vertical hydroponic systems in terms of price, power consumption and suitability to be built as an indoor automated system. A microcontroller was working as a brain of the system, which communicates with different types of sensors to control all the system parameters and to minimize the human intervention. An open internet of things (IoT) platform was used to store and display the system parameters and graphical interface for remote access. The designed system is capable of maintaining healthy growing parameters for the plants with minimal input from the user. The functionality of the overall system was confirmed by evaluating the response from individual system components and monitoring them in the IoT platform. The system was consuming 120.59 and 230.59 kWh respectively without and with air conditioning control during peak summer, which is equivalent to the system running cost of 13.26 and 25.36 Qatari Riyal (QAR) respectively. This system was circulating around 104 k gallons of nutrient solution monthly however, only 8–10 L water was consumed by the system. This system offers real-time notifications to alert the hydroponic system user when the conditions are not favorable. So, the user can monitor several parameters without using laboratory instruments, which will allow to control the entire system remotely. Moreover, the system also provides a wide range of information, which could be essential for plant researchers and provides a greater understanding of how the key parameters of hydroponic system correlate with plant growth. The proposed platform can be used both for quantitatively optimizing the setup of the indoor farming and for automating some of the most labor-intensive maintenance activities. Moreover, such a monitoring system can also potentially be used for high-level decision making, once enough data will be collected. This work presents significant opportunities for the people who live in the gulf region to produce food as per their requirements.
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•Solid digestate might replace the common growing media in soilless cultivation.•Liquid digestate could replace fertilizer in soilless cropping systems.•Pelleted digestate is an ...interesting growing media for lettuce soilless cultivation.•The use of digestates are a sustainable approach for lettuce soilless cultivation.
Digestate was evaluated as an alternative and sustainable growing medium and nutrient solution in the hydroponic cultivation of baby leaf lettuce (Lactuca sativa L.). Nine hydroponic combinations of substrate and fertilization (agriperlite + standard solution, agriperlite + liquid digestate, solid digestate + standard solution, solid digestate + liquid digestate, soil + standard solution, peat moss + standard solution; peat moss + liquid digestate, pelleted digestate + standard solution and pelleted digestate + liquid digestate) were tested and compared for the cultivation of baby leaf lettuce, in three different experiments. During the crop cycles, yield as other agronomical and microbiological parameters were investigated. The combination of agriperlite + liquid digestate, solid digestate + standard solution and pelleted digestate + standard solution enhanced plant growth by affecting the root, the shoot, the total dry weight and SPAD parameters, in the all investigated experiments (+32%, +40%, +29%, +17% respectively). Based on the obtained results, digestate represents a sustainable and alternative growing media or nutrient solution for the production of baby leaf lettuce cultivated in hydroponic system.
Hydroponic effluent (HE) contains a reasonable amount of residual nutrients. Therefore, HE could be used as a low-cost growth media for microalgae mediated resource recovery and water recycling. ...However, the presence of root exudates (particularly, benzoic acid) may lead to toxicity in microalgae.In the present study, the allelopathic effects of benzoic acid on microalgal growth was tested. During 96 h batch growth, Chlorella pyrenoidosa showed the highest biomass concentration (0.064–0.037 g.L−1) compared to Chlorella sorokiniana (0.09–0.26 g.L−1) at the tested benzoic acid doses. Moreover, both the species showed growth stimulation and growth inhibition up to certain benzoic acid doses. Hence, both the microalgal species showed allelopathic behaviour at different doses of benzoic acid. Further, the observed half effective concentration (96 h EC50) were 65.10 mg.L−1 and 105.27 mg.L−1, respectively, for Chlorella pyrenoidosa and C. sorokiniana with 95% confidence limits. Further, Haldane's model best fitted with experimental data of both the microalgae (r ∼ 0.99). Overall, the study reveals that the HE with low benzoic acid dose may serve as a suitable growth media for microalgae. However, further in-depth research interventions using real HE are desirable to determine its real-world applicability.
•Allelopathic effect of varying doses of benzoic acid on Chlorella spp. evaluated.•Improved microalgal growth at low doses (<40 mg L– 1) of benzoic acid.•C. pyrenoidosa more sensitive to benzoic acid compared to C. sorokiniana.•Haldane's model showed the best fit with microalgae growth kinetic data.
Abstract Hydroponic products have emerged as a popular choice, particularly among urban populations opting for healthy food alternatives. This study aims to investigate the impact of health ...consciousness and perceived benefits on the purchase intention of hydroponic products. Additionally, it explores the mediating role of perceived benefits, concerning the Value-Based Consumer Decision Model. The study encompasses responses from 208 participants residing in Indonesia, obtained through snowball sampling techniques. The study utilizes structural equation modelling (SEM) methodology using SmartPLS 4 software. The findings elucidate the significant roles that health consciousness β 0.294 and perceived benefits β 0.393 play in shaping the purchase intention toward hydroponic products. Health consciousness as a crucial factor for perceived benefit β 0.483. This research delves deeper by developing a model to fill existing research gaps. It explores the mediating role of perceived benefit in influencing the relationship between health consciousness on purchase intention β 0.190, the model reveals that perceived benefit successfully mediates the influence of health consciousness on purchase intention. This research is novel in its application of the value-based consumer decision model to the consumer behavior associated with hydroponic products. It offers important implications for business practitioners in the hydroponic product sector, providing invaluable insights into the shifting market dynamics driven by an increasingly health-conscious and benefit-oriented consumer base.
Hydroponics technology offers an environmentally sustainable alternative to conventional farming for urban food needs. It attracts technologists, non-farmers, retailers, restaurants, and consumers. ...However, the environmental impact of hydroponics-based urban farming models is yet to be quantified. This study assesses the environmental impact of hydroponics-based urban farming models and makes suggestions to improve their adoption. The methodology involves the use of the Product-Service Systems perspective to categorise the hydroponics-based urban farming models and the Life Cycle Assessment (LCA) method to quantify their environmental impact from a cradle-to-gate perspective. The analysis focuses on the lettuce crop in the state of Tamil Nadu, India. The results from the study suggest that that greenhouse farming (BM1) is more environmentally sustainable than indoor farming (BM2), Cabinet selling and remote monitoring (BM3), and conventional farming. It outperforms other models in terms of GHG emissions, Human Toxicity, and fossil fuels per unit of product, with BM3 having high environmental impacts.
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•Mapping the hydroponics models to the typology of Product-Services Systems•Environmental impact assessment of different urban farming models using LCA•Greenhouse lettuce cultivation (BM1) is considered more environmentally friendly than other models.
FOOD INDEPENDENCE DURING COVID-19 PANDEMIC THROUGH THE APPLICATION OF HYDROPONIC TECHNOLOGY IN WUNDUDOPI VILLAGE OF BARUGA DISTRICT, KENDARI CITY. Food security is one of the keys in the country ...development which is nowadays also affected by the Corona Virus Disease 2019 (COVID-19). The appeal about distancing and stay at home demands the community be able to maintain food security starting from household. Various activities can be carried out during the appeal to keep distancing and stay at home during the COVID-19 pandemic, especially those who can support household food needs, one of which is hydroponic organic vegetable farming. This activity is aimed to provide information, knowledge as well as practice on hydroponics farming techniques to produce vegetable crop products in an effort to maintain the food security during the COVID-19 pandemic. Participants who took part in this service program were the community groups Dasawisma Bukit Permai II and V Wundudopi Village, Baruga District, Kendari City. Community empowerment through the transfer of hydroponic technology starting with socialization and training in hydroponic farming, then continues with an evaluation to find out the Wundudopi community's perceptions of hydroponic farming technology. After implementing the program, participants experienced increased knowledge and gained skills in farming using hydroponic technology.
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