Product Range
Controlled Atomosphere Systems
Controlled Atmosphere (CA) storage involves maintaining an atmospheric composition that is different from air composition (about 78% N2, 21% O2, and 0.03% CO2); generally, O2 below 8% and CO2 above 1% are used. Atmosphere modification should be considered as a supplement to the maintenance of optimum ranges of temperature and RH for each commodity in preserving quality and safety of fresh fruits, ornamentals, vegetables, and their products throughout postharvest handling.
Exposure of fresh horticultural crops to low O2 and/or elevated CO2 atmospheres within the range tolerated by each commodity reduces their respiration and ethylene production rates; however, outside this range respiration and ethylene production rates can be stimulated, indicating a stress response. This stress can contribute to the incidence of physiological disorders and increased susceptibility to decay. Elevated CO2-induced stresses are additive to and sometimes synergistic with stresses caused by low O2, physical or chemical injuries, and exposure to temperatures, RH, and/or C2H4 concentrations outside the optimum range for the commodity.
The shift from aerobic to anaerobic respiration depends on fruit maturity and ripeness stage (gas diffusion characteristics), temperature, and duration of exposure to stress-inducing concentrations of O2 and/or CO2. Up to a point, fruits and vegetables are able to recover from the detrimental effects of low O2 and high CO2 stresses (fermentative metabolism) and resume normal respiratory metabolism upon transfer to air. Plant tissues have the capacity for recovery from the stresses caused by brief exposure to fungi static atmospheres (>10% CO2) or insecticidal atmospheres (<1% O2 and/or 40 to 80% CO2). Post-climacteric fruits are less tolerant and have a lower capacity for recovery following exposure to reduced O2 or elevated CO2 levels than pre-climacteric fruits. The speed and extent of recovery depend on duration and levels of stresses and underlying, metabolically driven cellular repair.
Elevated-CO2 atmospheres inhibit the activity of ACC synthase (key regulatory site of ethylene biosynthesis), while ACC oxidase activity is stimulated at low CO2 and inhibited at high CO2 concentrations and/or low O2 levels. Ethylene action is inhibited by elevated CO2 atmospheres. Optimum atmospheric compositions retard chlorophyll loss (green colour), biosynthesis of carotenoids (yellow and orange colours) and anthocyanins (red and blue colours), and biosynthesis and oxidation of phenolic compounds (brown colour). Controlled atmospheres slow down the activity of cell wall degrading enzymes involved in softening and enzymes involved in lignification, leading to toughening of vegetables. Low O2 and/or high CO2 atmospheres influence flavour by reducing the loss of acidity, starch to sugar conversion, sugar interconversions, and biosynthesis of flavour volatiles. When produce is kept in an optimum atmosphere, ascorbic acid and other vitamins are retained, resulting in better nutritional quality.
CA Control System and Gas Analyzer comprises of
- Thermo and Gas Sealed Chamber
- PLC-Control unit + gas detection unit.
- Scrubbers for CO2 with control Panel
- Scrubbers for Ethylene with Control Panel
- Breather Bags for Room Pressure Control
- Compressors for N2 generator
- Nitrogen Generation System
- Pressure Relief Valves
- Humidity Controller
- Refrigeration Unit
Features
- High durability
- Excellent functionality
- Impeccably controls the moisture level, O2 level and CO2 level of storage room
- Rigid & compact design
- Corrosion resistant
Applications
- Cold Storages
- Converting old Chambers
CO2 Scrubber
CO2 Scrubber is widely considered suitable in different domains for removing CO2 from the atmosphere in a decompression chamber. These scrubbers are precisely designed by utilizing the high quality materials along with the implementation of advanced techniques. This range of scrubbers is available in distinguished sizes, capacities and specifications to cater the application requirements of our wide client base.
Features & Benefits
- Super fast deployment
- Rigid & compact design
- Easy & safe to operate
- Long service life
- Automated control unit
- Excellent functionality
- Low power consumption
- Noise free operation
Applications
- Space crafts
- Submersible crafts
- Airtight chambers
- Industrial plants
CONTROLLED ATMOSPHERE MANAGEMENT SYSTEM
- Gas Analyzer (O2, CO2, Ethylene and NH3) Up to 12 Rooms
- N2 Generator (Membrane Based) up to 100 m3/hr
- All in one Skid Controlled Atmosphere System
- CA Management Fruitron SCADA Software
- Single/Dual Vessel CO2 Scrubber up to 1000 Kg/day
LIST OF COMPLETED/ON GOING PROJECTS
| PTR Detail as on Sep 2016 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Sr. | Name of Customer | Location | Date of Completion | Project Details | No of Rooms |
Capacity Each |
Total | Remark |
| 1 | Sunshine Agro | Halvad, Rajkot | Nov - 14 | Ripening Chamber converterted to CA |
5 | 20 | 100 | Kept Lemons for approx 75 Days |
| 2 | IG International | Banglore | Nov - 15 | Multy Commodity | 10 | 250 | 2500 | For Tobacco, Apple &Imported Fruits |
| 3 | Panna CA Store | Jammu | Aug - 15 | for Apples 1500 Ton CA | 7 | 175 | 1225 | For Apple |
| 4 | Raamesh Enterprise | Baddi | Aug - 15 | 1500 Ton CA for Apples |
7 | 175 | 1225 | For Apple |
| 5 | Telecon Food Processing |
Jaipur | Feb - 16 | 5090 Ton Multy Commodity |
20 | 250 | 5000 | Used for Carrots, Apple, Cauliflower & Cabbage |
| 6 | Keshav Cold Storage | Rajkot | Jul - 16 | Multy Commodity | 9 | 100 | 900 | For Lemons |
| 7 | IG International | Amravati | In Process | Orange | 4 | 250 | 1000 | For Oranges |
| 8 | Godwin Agro | Dera Bassi | In process | Apples | 12 | 250 | 3000 | On Going Comissioning |
| 9 | Super Fruit Processing | Hisar | In process |
Multy Commodity | 4 | 250 | 1000 | On Going Comissioning |
| 10 | Avon Cold Store Surat | In Process _ |
Multy Commodity | 8 | 70 | 560 | For Lemons | |
| 11 | Deepak Humifresh | Kundli | In process | Apples | 5 | 250 | 1250 | *MA System with only N2 Generator |
| 12 | Goyal Farm Fresh | I Dera Bassi | In process | Apples | 24 | 250 | 6000 | For Apple & Carrots |
| Total | Rooms: | 115 | Capacity (Tons) |
23760 | ||||
Some of the installations at various sites and their success speaks about our dedication towards our customers and our expertise in the Post Harvest Technologies such as Controlled Atmosphere, Modified Atmosphere, Ripening Research Chambers and in the Ripening process.
ABOUT CHEMTRON SCIENCE LABS
- Current strength of 250 employees as on March 2016
- Crisil MSM 3E rated company
- The First in the country for all ripening products like systems and disposable cans and now CA systems
- 4 distinct Verticals where all the components are made in house
- 20 % of revenue is spent on R&D and 40 % of Revenues from R&D products across all 4 Verticals
- Service team of more than 10 people in Mumbai/Jaipur/Lucknow and Chandigarh
- More than 5000+ Ripening Installations and 12 projects of CA system
- 2 Years Standard Warranty on CA systems
BRANDS USED IN OUR SYSTEM
Safety Valve
- Made for UPVC SC 80 Pipe fittings
- Unique design with over and under pressure valves in one assembly
- User configurable pressure settings From 5mm to 20 mm W/C
Manometer
- Alcohol based Dual range Manometer
- Acrylic body for clear visibility
- +20 mm to -20mm W/C range
- With provision of gas sampling
Sensor Module
- Smart Sensor module with RS 485 data communication port
- Choice of 4 Temperature Sensors. i.e. Ambient and up to 4 Pulp probes
- RH sensor with Temp compensation
- Choice of adding up to 8 further more sensors
- IP 56 design for High humidity environments
Breather Bag
- Made from 100 pm industrial PVC
- UV Stabilized for maximum life
- Material pressure tested till 40 mm W/C
- Fused Seal for 100 % leak tightness
Ethylene Portable Monitor
- 0-500 PPM ethylene sensor
- Electrochemical based sensor
- Portable with rechargeable battery
- Used to detect leakages in the chamber
- Very effective in identifying rotten apples in bins
CA PANEL FEATURES
CA Management Systems:
- A compact single skid indigenously designed for the complete CA solution supporting up to 12 chambers
- An all-encompassing composite panel for Gas Analyzing, Nitrogen purging and CO2 scrubbing designed for multiple CA chambers
- The panel analyzes the atmosphere inside the storage and releases nitrogen as per the need and controls CO2 within the desired ranges
- Temperature monitoring and control along with RH monitoring with data logging enabled to ensure flawless control environment
- All control valves, instruments and electronics in one panel for one point service and maintenance
- The panel supports both single vessel and twin vessel CO2 scrubber model
Gas Analyzer:
- Independently analyzes the atmosphere of the cold room by sampling gas from of all CA rooms
- Continuous monitoring of temperature from multiple zones of a CA chamber (up to 5) for sensor failure, indoor fan failure and other refrigeration failure redundancies
- Carbon Dioxide and Ethylene monitoring, control and alarms for long storage of the commodity
- Self-Calibrating and auto tuning sensors
- One panel can support up to 12 rooms which reduces cost and maintenance
N2 Generator:
- Nitrogen production using Membrane technology which assures long life with minimal maintenance
- Best in the world Membranes imported from Japan, Netherlands and the USA
- No mechanical moving parts and noise free* nitrogen production
- Nitrogen generated is oil free, dust free and moisture free which keeps your commodity clean
- Variable Nitrogen output from 90% to 99% achievable dynamically
- Models from 5 m3/hr up to 60 m3/hr available suitable for wide range of storage volume
- Smart control enables quicker pulldown and saves time cost and energy
CO2 Scrubber:
- CO2 scrubbing by cyclic adsorption and De-adsorption of CO2 over activated carbon
- Premium grade made in India Activated carbon ensures long life without physical disintegration
- CO2 scrubbing capacity from 50 Kg CO2 per day to 250 Kg CO2 per day on a single skid
- Controls using SS316 pneumatic valves which are sturdy with 10000 cycle operational life
- Scrub and Purge cycle based on sensor feedback enabling stringent CO2 control in the chamber
| Model | Controlled Atmosphere Control Systems | No. of Channels (Rooms) | N2 Generator | Air Compressor | CO2 Scrubber | Scrubbing Vessel | Gas Analyzer (12 Channel) |
Sensor Per Room | Breather Bag (m3) | Safety Valve | Manometer | Connected Load | Size of Skid (m) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model CSL-CAS- 100 NCG | CA System for Capacity upto 100 Tons | 12 | 5 m3/hr | 20 m3/hr | 75 kg/day | 1 | 02 Membrane, 02 Room, CO2 Room, Ethylene Room and NH3 Optional | Temp Ambient, RH Pulp1 and Pulp2 (10m) Per Room | 0.5 | Over Pressure and Under Pressure Qty 2 Per Room | +30mm to —30mm Qty 1 for all Rooms | 5 KW | 2 x 2.7x 2 |
| Model CSL-CAS- 500 NCG | CA System for Capacity upto 500 Tons | 12 | 7.5 m3/hr | 30 m3/hr | 75 kg/day | 1 | 0.5 | 6 KW | 2 x 2.7 x 2 | ||||
| Model CSL-CAS- 1000 NCG | CA System for Capacity upto 1000 Tons | 12 | 10 m3/hr | 50 m3/hr | 125 kg/day | 1 | 1 | 8 KW | 2 x 2.7 x 2 | ||||
| Model CSL-CAS- 2500 NCG | CA System for Capacity upto 2500 Tons | 12 | 40 m3/hr | 160 m3/hr | 250 kg/day | 2 | 2 | 25 KW | 2 x 4 x 2 | ||||
| Model CSL-CAS- 5000 NCG | CA System for Capacity upto 5000 Tons | 12 | 80 m3/hr | 300 m3/hr | 500 kg/day | 2 | 4 | 35 KW | 5 x 4 x 2 |
Benefits of CA Systems
- Retardation of senescence (including ripening) and associated biochemical and physiological changes, particularly slowing down rates of respiration, ethylene production, softening, and compositional changes
- Reduction of sensitivity to ethylene action at O2 levels < 8% and/or CO2 levels >1%
- Alleviation of certain physiological disorders such as chilling injury of avocado and some storage disorders, including scald of apples
- CA can have a direct or indirect effect on postharvest pathogens (bacteria and fungi) and consequently decay incidence and severity. For example, CO2 at 10 to 15% significantly inhibits development of botrytis rot on strawberries, cherries, and other perishables
- Low O2 (<1%) and/or elevated CO2 (40 to 60%) can be a useful tool for insect control in some fresh and dried fruits, flowers, and vegetables and in dried nuts and grains
- Commercial use of CA storage is greatest on apples and pears worldwide, less on cabbages, sweet onions, kiwifruits, avocados, persimmons, pomegranates, and nuts and dried fruits and vegetables (table 1). Atmospheric modification during long-distance transport is used with apples, asparagus, avocados, bananas, broccoli, cane berries, cherries, figs, kiwifruits, mangos, melons, nectarines, peaches, pears, plums, and strawberries. Continued technological developments in the future to provide CA during transport and storage at a reasonable cost (positive benefit/cost ratio) are essential to greater applications on fresh horticultural commodities and their products
OUR OTHER PRODUCT IN POST HARVEST
