Transpiration Process Research Articles

Brackish Water Phytodesalination by the Euhalophyte Sesuvium portulacastrum

In the Middle East and North Africa as well as in numerous countries in South America and Southeast Asia, water scarcity is a real concern. Therefore, water desalination has become a key solution and an important source of freshwater production. Solar stills are used for water desalination but they require low depth of sea or brackish water and sufficient solar radiation to evaporate water. In this investigation, a phytodesalinator is presented for the first time. The halophyte used in this work is Sesuvium portulacastrum L., a heat-tolerant euhalophyte. The presented phytodesalinator can replace basic solar stills during cold seasons if there is sufficient sunlight to ensure the transpiration process in the plant. The euhalophyte S. portulacastrum was tested for its ability to desalinate reject brine as grown for two subsequent phytodesalination cycles. Several factors were found to affect the productivity of the phytodesalinator, in particular, solar radiation, phytodesalination duration, and plant density. Nevertheless, it exhibited an average productivity of 2.44 kg/m2/d and showed several advantages in comparison with basic solar stills.

MXene Sediment-Based Poly(vinyl alcohol)/Sodium Alginate Aerogel Evaporator with Vertically Aligned Channels for Highly Efficient Solar Steam Generation

HighlightsMXene sediments is innovatively used as photothermal material for seawater desalination.Inspired by the natural wood transpiration process, a 3D MXene sediment-based aerogel with vertically aligned channels is innovatively prepared as solar evaporator.With unique structure and composition, excellent photothermal conversion efficiency, evaporation rate, salt resistance, and resistance to biological/oil/special environments are achieved in practical desalination.

In situ measurements of dissolved gases in xylem sap as tracers in plant physiology

Abstract Trees transport gases from the ground into the atmosphere through the process of transpiration. Tracing gases transported through this mechanism continuously and under field conditions remains an experimental challenge. Here we measured gases dissolved in the tree sap in situ and in real time, aiming to simultaneously analyse the transport of several gases (He, Ar, Kr, N2, O2 and CO2) from the soil, through the trees, into the atmosphere. We constructed and inserted custom-made semi-permeable membrane probes in the xylem of a fir tree and measured gas abundances at different heights using a portable gas equilibrium membrane-inlet mass spectrometer (‘miniRUEDI’). With this method, we were able to continuously measure the abundances of He, Ar, Kr, N2, O2 and CO2 in sap over several weeks. We observed diurnal variations of CO2 and O2 concentrations that reflected tree physiological activities. As a proof of the concept that trees do uptake dissolved gases in soil water, we irrigated the tree with He-enriched water in a tracer experiment and were able to determine upward sap flow velocity. Measurements of inert gases together with reactive species, such as CO2 and O2, allowed separation of the physical transport and exchange of gases derived from the soil or atmosphere from biological reactions. We discuss the opportunities that our technique provides for continuous in situ measurements of gases in the tree sap.

Stomatal evolution and plant adaptation to future climate.

Global climate change is affecting plant photosynthesis and transpiration processes, as well as increasing weather extremes impacting socio-political and environmental events and decisions for decades to come. One major research challenge in plant biology and ecology is the interaction of photosynthesis with the environment. Stomata control plant gas exchange and their evolution was a crucial innovation that facilitated the earliest land plants to colonize terrestrial environments. Stomata couple homoiohydry, together with cuticles, intercellular gas space, with the endohydric water-conducting system, enabling plants to adapt and diversify across the planet. Plants control stomatal movement in response to environmental change through regulating guard cell turgor mediated by membrane transporters and signaling transduction. However, the origin, evolution, and active control of stomata remain controversial topics. We first review stomatal evolution and diversity, providing fossil and phylogenetic evidence of their origins. We summarize functional evolution of guard cell membrane transporters in the context of climate changes and environmental stresses. Our analyses show that the core signaling elements of stomatal movement are more ancient than stomata, while genes involved in stomatal development co-evolved de novo with the earliest stomata. These results suggest that novel stomatal development-specific genes were acquired during plant evolution, whereas genes regulating stomatal movement, especially cell signaling pathways, were inherited ancestrally and co-opted by dynamic functional differentiation. These two processes reflect the different adaptation strategies during land plant evolution.

Urban cemeteries: The forgotten but powerful cooling islands

Urban parks play a key role in UHI mitigation. However, the role of other prominent types of urban green infrastructure has not been comprehensively studied. Thus, the main objective of this study was to evaluate the role of cemeteries and allotments as cooling islands compared to the well-studied park areas. We assessed the LST of cemeteries, allotments and parks based on Landsat 8 TM images across the five largest German cities during summertime. Random forest regressions explain the LST spatial variability of the different urban green spaces (UGS) with spectral indices (NDVI, NDMI, NDBaI) as well as with tree characteristics (tree type, tree age, trunk circumferences, trunk height or canopy density). As a result, allotments were identified as the hottest UGS with the city means varying between 23.1 and 26.9 °C, since they contain a relatively high proportion of sealed surfaces. The LST spatial variability of allotment gardens was best explained by the NDVI indicating that fields with a higher percentage of flowering shrubs and trees reveal lower LST values than those covered by annual crops. Interestingly, cemeteries were characterized as the coolest UGS, with city means between 20.4 and 24.7 °C. Despite their high proportion of sealed surfaces, they are dominated by old trees resulting in intensive transpiration processes. Parks show heterogeneous LST patterns which could not be systematically explained by spectral indices due to the variability of park functionality and shape. Compared to parks, the tree-covered areas of cemeteries have a higher cooling potential since cemeteries as cultural heritage sites are well-protected allowing old tree growth with intensive transpiration. These findings underline the relevance of cemeteries as cooling islands and deepen the understanding of the role of tree characteristics in the cooling process.

Impact of thinning on leaf economics, plant hydraulics, and growth dynamics

Integrating climate change concerns into forest management strategies remains challenging. Among management strategies, thinning has been proven to alter major components underlying the carbon and water cycles over the short term. However, the functional adaptability of managed forests to cope with long-term drought remains unclear. This study aims to quantify the influence of thinning on key plant functional traits for two pine species, and their impacts on the fundamental processes of tree growth and transpiration. We conducted an experimental silvicultural trial with varying thinning intensities in two Pinus sylvestris and Pinus nigra plantations with the following specific objectives: i) to assess the impact of thinning on major traits involved in the leaf economic spectrum (LES), and hydraulic relations, and ii) to understand which of these traits reflect fundamental aspects of plant growth and transpiration, and their relations with environment. We used a combination of dendrochronological (basal area increment, BAI), sapflow (Fd), and tree ring isotope (δ13C) data, along with key functional and physiological traits including photosynthesis (A), leaf mass area (LMA), Huber value (Hv), sapwood density (Wd), and predawn to midday water potential (Ψpd, Ψmd).Our results revealed species-specific responses, with P. nigra exhibiting a conservative growth strategy, whereas P. sylvestris displayed increased growth after thinning. Despite thinning influenced both BAI and wood δ13C with notable species-dependent variations, we evidenced a general convergence in the relationships between LES traits and Hv across species, treatments and seasons (p < 0.01). BAI responses to thinning translated into predictable changes in key hydraulic traits and adaptive changes in physiological performance. For instance, BAI was inversely related to LMA and Hv. Consistent with LES, variations in LMA influenced A. In turn, seasonal variations in LMA scaled negatively with Ψpd, and Ψmd (p < 0.01). Such a functional adaptation suggests that thinning promotes growth while favouring forest resilience in the long term. This study provides practical implications for the implementation of a trait-based approach into silvicultural frameworks and anticipating the consequences of climate change for managed forest ecosystems.

A modified local thermal non-equilibrium model of transient phase-change transpiration cooling for hypersonic thermal protection

Aiming to efficiently simulate the transient process of transpiration cooling with phase change and reveal the convection mechanism between fluid and porous media particles in a continuum scale, a new two-phase mixture model is developed by incorporating the local thermal non-equilibrium effect. Considering the low-pressure and high overload working conditions of hypersonic flying, the heat and mass transfer induced by capillary and inertial body forces are analyzed for sub-cooled, saturated and super-heated states of water coolant under varying saturation pressures. After the validation of the model, transient simulations for different external factors, including spatially-varied heat flux, coolant mass flux, time-dependent external pressure and aircraft acceleration are conducted. The results show that the vapor blockage patterns at the outlet are highly dependent on the injection mass flux value and the external pressure, and the reduced saturation temperature at low external pressure leads to early boiling off and vapor blockage. The motion of flying has a large influence on the cooling effect, as the inertial force could change the flow pattern of the fluid inside significantly. The comparison of the results from 2-D and 3-D simulations suggests that 3-D simulation shall be conducted for practical application of transpiration cooling, as the thermal protection efficiency may be overestimated by the 2-D results due to the assumption of an infinite width length of the porous plate.

Achieving Ultrahigh Voltage Over 100 V and Remarkable Freshwater Harvesting Based on Thermodiffusion Enhanced Hydrovoltaic Generator

AbstractEvaporative hydrovoltaic generators hold significant potential for alleviating water‐energy crisis, but low output voltage configurations due to the slow phase transition rate of water molecules and the intricate nature of integration limit their applications. Herein, a lotus‐inspired interfacial evaporation‐driven hydrovoltaic generators (IEHVG) is developed for efficient generation of water vapor and electricity from seawater instead of freshwater and achieves an ultrahigh voltage output higher than 100‐volt level through forested IEHVG integration. The biomimetic hydrogel is developed with specific liquid transport channels, graphene quantum dots/MXene nanocomposites, and gradient hydrophobic interface for highly enhanced photothermal evaporation and electricity generation by mimicking the transpiration process of a “stems‐leaves of lotus”. The synergistic thermodiffusion effect leads to the output power density of IEHVG reaches up to 45.6 µW cm−2 and can power electronic devices or charge commercial supercapacitors. The freshwater‐electricity cogeneration integrated system consisting of 192 IEHVG units can harvest a record‐breaking voltage reaching 105 V and a high freshwater harvesting rate up to 2.0 L m−2 h−1 from seawater in a well‐lit outdoor area. This work demonstrates that IEHVG offers a novel concept for modular freshwater and high‐voltage power sources access on offshore work platforms.

Darcy-Forchheimer flow of Ag–ZnO–CoFe2O4/H2O Casson ternary hybrid nanofluid induced by a rotatory disk with EMHD

This study comprehensively inspects the steady, three-dimensional electromagnetohydrodynamics Darcy-Forchheimer slip flow upon a Casson ternary hybrid nanofluid through a porous rotatory disk. The study plunges into the repercussions of key factors namely thermophoresis, chemical reaction, viscous dissipation, Brownian movement, thermal radiation, and activation energy attributes of the ternary hybrid nanofluid. The current endeavour is inspired by the flourishing requirement in several energy-related and industrial applications. A mathematical configuration is formed to express the fluid flow system and heat and nanoparticle mass transpiration processes. Then partial differential equations administrating our mathematical model, are reformed into ordinary differential equations with the assistance of specific similarity conversions and eventually interpreted numerically using the noteworthy bvp4c scheme. The consequences of discrete flow factors upon temperature, concentration, and velocity profiles and Nusselt number, skin friction’s coefficient, and Sherwood number are investigated. The achieved outcomes disclose the electric parameter aids in upgrading the tangential velocity and temperature profiles. The outcomes reveal that for Casson ternary hybrid nanofluid, the heat and mass transpiration rates elevate by 19.23% and 51.28%, respectively, compared to Casson nanofluid whereas skin friction coefficient is retrogressed by approximately 8.96% for Casson ternary hybrid nanofluid compared to ternary hybrid nanofluid.

Bio-inspired polyionic membrane for long-lasting and repeatable electricity harvesting from moisture

Evaporation power generation (EPG), hailed as a promising clean power generation technology, has garnered significant attention. Nonetheless, achieving consistent and replicable performance of EPG remains a major challenge, hampering its practical application potential. Herein, we present the design of a tri-layered poly-ionic membrane (TL-PIM) inspired by transpiration processes in plants, that can not only continuously output electricity with an average voltage of ∼0.6 V for over 8 consecutive days with a maximum power density of 1.6 µW cm−2, but can also be reused for at least 70 cycles (> 350 h) with a stable voltage, demonstrating superior repeatability over most previous works. The excellent long-lasting and repeatable performance of EPG in the TL-PIM can be attributed to the stable nanochannels constructed by a hydrophilic polymer, 2D nanosheets, and poly-ionic liquids (PILs), where the bromide ions (Br-) in the PILs can shuttle back and forth selectively and efficiently during the power generation and discharge processes. More importantly, the TL-PIM can be integrated linearly to generate electricity within a wide range of temperatures and humidity, even outdoors, showcasing remarkable environmental adaptability. These findings on EPG indicate that the bio-inspired TL-PIM offers a promising venue for continuous and reproducible electricity generation by harnessing thermal energy from moisture, which holds significance for the sustainable utilization of EPG as a renewable energy source in the future.

RESEARCHES THAT CONCERN SOME PHYSIOLOGICAL, BIOLOGICAL AND CHEMICAL ISSUES BY NOW RECORDED IN THE CASES OF SOME VINE KINDS DESTINED TO PRODUCE TABLE GRAPES WHICH ARE CURRENTLY CULTIVATED WITHIN THE DRĂGĂȘANI VINEYARD

The productiveness performance ratios of the vine kinds destined to produce grapes for fresh status consumption insofar their respective quantities and quality levels could ever be concerned are effectively influenced by the vine log’s leaves’active surface and by its own intrinsic features as these latters could be evaluated through the analyses performed upon the leaves’respectively gained amounts of various macro-elements. In the cases of certain vine kinds such as for example Victoria, Chasselas Doré, Călina, Hamburg Muscat and Afuz Ali the performed investigations have brought up reliable evidence which does concern the existences of their respective vocations for revaluating at their best the pedologic and oeno-climate-related local circumstances graciously offered by this longtime since well-known vine cultivated area. Among these circumstances does as well figure the humanly chosen situation of the concerned vine logs through their precisely calculated positions upon the local hillock’slopes. For all of the hereby studied vine kinds the effective extents of their respective leaves’active surfaces as well as their own intrinsic features are really submitted to the influences which could be exerted by the most highly possible to occur drought time intervals. Under these circumstances the vine logs situated amidst the hillock slope should benefit from the most intense photo-synthesis processes while the greatest respiration capacities could be recorded at the vine logs situated upon the slope’s top. However the intensity degrees attended to by the transpiration processes would instead be the highest for the vine logs situated at the slopes’feet.

Two-Phase Fluid Transport Phenomena in Phloem Vessels

In this study, the two-phase (particle-fluid) Newtonian fluid is studied when flowing through a sieve tube. The model of phloem is assumed with permeable walls. The flow is important for the study of the transport of food in plants. Leaves prepare food using sunlight and minerals transported from roots to leaves using xylem cells which operate predominantly on the concept of Poiseuille flow. The pressure is generated due to processes of transpiration. While prepared food is transported from leaves to stems for storage and other parts of the plant body to perform desired operations. Phloem operates with the concept of diffusion. Each phloem cell is a long tube with a permeable membrane at each end, which helps to keep the mineral fixed in food and transported to different parts of the plant. The reflection coefficient is an important parameter that helps to show the effects of the permeability of the diffusion membrane. Equations are modelled and solved using perturbation and HAM Solutions are displayed in graphical form.

Washable and Eco-Friendly PEDOT:PSS Coated Silk Yarn Based-Transpiration-Driven Electrokinetic Power Generator with Tremendous Energy Generation

Since the importance of eco-friendly technologies and environmental consideration has been increased gradually, energy harvesting technologies that generate electricity from ambient has been gained attentions, including a solar cell, a piezoelectric, a triboelectric, and a thermoelectric device. However, since the relative low energy generation efficiency has been considered as the obstacle, the research on a novel energy harvesting technology is necessary.A transpiration driven-electrokinetic power generator (TEPG), one of the hydro-electric nanogenerators, has been developed recently and researched due to the abundant energy resource (water), the ability to generate energy continuously, no sensitivity to ambient condition, etc. The basic concept is based on the transpiration process where the water flows from roots to leaves by water gradient in the plants. The water gradient in TEPG system is formed with dropping water at one side of the device. There are two main components, including a conductive material and a hydrophilic substrate. The conductive materials with high surface area capture the cations in solution to decrease a surface energy, leading to formation of the electrical double layer. The hydrophilic substrate promotes the flow of solution along the substrate, leading to the transfer of electrons in the conductive material.Herein, we utilize the PEDOT:PSS as conductive material and silk yarn as hydrophilic material. A silk yarn is a natural and biodegradable material with the high mechanical properties, lightweight, and biocompatibility. PEDOT:PSS is promising candidate for TEPG device because its negative charged PSS groups attract the cations selectively via electrostatic interaction, leading to the increase of potential difference between wet/dry region. However, the low washing resistance of PEDOT:PSS is the limitation for practical wearable devices since the cleanness is essential. During the cleaning process, the PEDOT:PSS is easily detached from the substrate. Therefore, the research on the PEDOT:PSS with sufficient water resistance is essential for its wider utilization. In general, an ethylene glycol (EG) is commonly used for improving water resistance of PEDOT:PSS through hydrogen bonding with PSS parts. However, it is also known as the agent to enhance electrical conductivity via removal of excess PSS. Thus, we introduce the divinyl sulfone (DVS) as a covalently cross-linker for enhancing washing resistance of PEDOT:PSS. In this work, we compare the energy generation performance and washing resistance of various PEDOT:PSS coated TEPGs without and with EG or DVS, named as PS-TEPG, PES-TEPG, and PDS-TEPG, respectively.

Mucus Transpiration as the Basis for Chronic Cough and Cough Hypersensitivity.

Chronic cough is characterized by a state of cough hypersensitivity. We analyze the process of transpiration, by which water appears to evaporate from laryngeal and tracheal mucus as from the surface of a leaf, as a potential cause of cough hypersensitivity. In this process, osmotic pressure differences form across mucus, pulling water toward the air, and preventing mucus dehydration. Recent research suggests that these osmotic differences grow on encounter with dry and dirty air, amplifying pressure on upper airway epithelia and initiating a cascade of biophysical events that potentially elevate levels of ATP, promote inflammation and acidity, threaten water condensation, and diminish mucus water permeability. Among consequences of this inflammatory cascade is tendency to cough. Studies of isotonic, hypotonic, and hypertonic aerosols targeted to the upper airways give insights to the nature of mucus transpiration and its relationship to a water layer that forms by condensation in the upper airways on exhalation. They also suggest that, while hypertonic NaCl and mannitol may provoke cough and bronchoconstriction, hypertonic salts with permeating anions and non-permeating cations may relieve these same upper respiratory dysfunctions. Understanding of mucus transpiration and its role in cough hypersensitivity can lead to new treatment modalities for chronic cough and other airway dysfunctions promoted by the breathing of dry and dirty air.

Multi-year evapotranspiration estimates from four common vegetation types in a montane region of the intermountain west

Evapotranspiration (ET) is a major component of water balance and is crucial for understanding the hydrological processes, however due to highly heterogeneous distributions of soils and plants, accurate quantification of ET remains a major challenge in montane ecosystems. In this study, water use for four common vegetation communities was numerically modeled using Hydrus-1D over four continuous growing seasons (2009 to 2012), supported by a network of soil water content sensor measurements. Plant species included i) aspen (Populus tremuloides) with understory dominated by grass/forb (rudbeckia occidentalis, Bromus carinatus and Elymus trachycaulu), ii) conifer (Picea engelmannii and Abies lasiocarpa), iii) grass (dominated by B. carinatus and E. trachycaulu, et al.), and iv) sage (Artemisia tridentata). The numerical model simulated water transport within the soil and water loss from soil evaporation and plant transpiration processes. Simulations were compared with temporal and spatial dynamics of soil water content, measured at 0.1 m, 0.25 m and 0.5 m within each of 36 subplots at 30-minute intervals. Numerically simulated ET in the sage/grass meadow was compared with ET determined from a centrally-located eddy covariance tower. The simulations effectively predicted soil moisture and ET of the montane plant communities during summer dry down. Results indicate vegetation type showed no significant difference (<5 %) in ET comparing four growing seasons, except where abnormally wet conditions occurred. Four-year mean cumulative growing season ET estimates for aspen, deep-rooted conifer, shallow rooted conifer, sage, and grass were 43.0, 40.2, 28.7, 28.8 and 26.1 cm, respectively.

Analysis of physio-biochemical indices for growth and yield of groundnut (Arachis hypogaea L.)

The present study on the topic was performed at AICRP on groundnut, M.P.K.V., Rahuri, (M.S.) during summer 2021.The experiment was laid out in Randomized Block Design with three replication including sixteen genotypes. The groundnut genotypes with highest rate of photosynthesis and transpiration processes are higher in yielding. Correlation studies revealed that number of mature pods/plant and 100 kernels weight (g), showed maximum influence on dry pod yield (g/plant). The genotypes Phule Unnati, ICGV-15311 and ICGV-15303 showed higher yielding ability and HI (%).

Demethylation for Improvement of Defects of Aneuploidy

Flowering plants were a class of land plants of species. However, the characteristics including flowers, seeds, and production of fruits. The method involved studying the plants lifecycle occurrences in spores. The demethylation used to produce this by meiosis. The results showed the four layers, a shrub or sapling had stunted growth. It concluded the process of transpiration reduced by high precipitation of demethylation. The implication was the sporophyte phase produced spores by induced demethylation occurrences in nature as meiosis withing sporangium.

A Comparison of Water Uptake by Transpiration from Different Soil Depths among Three Land Cover Types in the Arid Northwest of China

In recent decades, the frequency, intensity, and extent of extreme drought events have posed serious threats to ecosystems in vulnerable regions. With low annual precipitation, the arid area in northwest China is a typical ecologically fragile area, and extreme drought events will aggravate desertification in this area. In order to control desertification, various experimental plantations have been established in Northwest China. However, there is no consensus on which plantations are more suitable to become widespread. To explore this, we conducted a comparative study on different plantations from the perspective of long-term deep (100 cm depth) soil moisture balance. In our study, six typical ecosystems were selected for comparison of the variation of soil moisture and control factors. The results showed three main findings. First, the soil moisture of all six ecosystems showed a similar hierarchy of increasing moisture with the increasing depth of the soil layer. However, the deep layer soil moisture (mean = 0.33 ± 0.22 cm3·cm−3) of the artificial poplar (Populus alba) forest exhibited a downward trend over time after the fifth year, but did not at the shallow layer for this ecosystem. Second, the trends of the maximum canopy coverage between the different ecosystems from 2010 to 2019 showed significant differences from one another, with the maximum value of the leaf area index for the poplar forest being the highest (Maximum = 7.13). Third, a negative correlation (R2 = 0.52) was found between deep soil moisture and transpiration for the poplar forest, and a positive correlation (R2 ≥ 0.23) between these two metrics was found for the other five ecosystems. The results revealed that transpiration processes had a different consumption of deep soil moisture due to the differences in the root and canopy density of several plantations. Among these ecosystems, the transpiration of the artificial poplar forest is noticeably large, resulting in a unilateral decline in soil moisture.

Designing flower-like La-Bi2WO6/Ni@N-rGO composite for the photocatalytic oxidation coupled in-suit hydrogenation desulfurization of diesel oil

The ultra-deep removal of 4,6-DMDB and decrease in loss of C/ H atoms is one of the bottlenecks in achieving ultra-low sulfur fuel oil, which is resolved with photocatalytic oxidation coupled with in-situ hydrodesulfurization. Herein, a flower cluster microsphere composite La-Bi2WO6/Ni@N-rGO as photocatalytic oxidation coupling with in-situ hydrodesulfurization catalysts was prepared by a one-step hydrothermal method. The characterization results of STEM, SEM, Raman, and XPS showed that La-Bi2WO6 combined with Ni@N-rGO formed flower-like microspheres with large specific surface areas. The experimental results showed that the catalysts had excellent photocatalytic oxidation coupling with in-situ hydrodesulfurization performance and good stability. A desulfurization ratio of 4,6-DMDBT reached 99.9% under mild conditions. A plausible mechanism for the photocatalytic desulfurization of 4,6-DMDBT was presumed by combining experiments with density functional theory. The designed La-Bi2WO6/Ni@N-rGO could be utilized for a large-scale process of diesel and other transpiration fuel oil.

Pengaruh Arang Aktif Bidara dalam Menunda Kematangan Buah Klimakterik Tomat (Solanum lycopersicum)

Tomato (Solanum lycopersicum) is classified as a climacteric fruit that is easily damaged, especially during the storage and shipping process, so proper postharvest management is needed. Postharvest management of climacteric fruit can be overcome by inhibiting the process of respiration and transpiration using activated charcoal. Activated charcoal works by absorbing ethylene gas during the respiration process. This study aims to analyze the use of bidara activated charcoal variations as an inhibitor of tomato ripeness and to examine changes in fruit quality during the 10day storage. The research used One Way Anova analysis with one factor of variation of activated charcoal with control treatment, 1gr, 3gr, and 5gr. Parameters tested were weight loss, Total Soluble Solid, and vitamin C. The use of bidara activated charcoal on tomatoes got the best results in the 5gr treatment with a weight loss value of 0.46%, 0.10 obrix total dissolved solids, and 18.93% vitamin C. Bidara activated charcoal had an effect on weight loss and total soluble solids but had no effect on vitamin C content. Bidara wood activated charcoal can be developed into an absorbent material for tomatoes.