ASPARAGUS PACKING TECHNOLOGY
Once harvested, asparagus spears are highly perishable. They also continue to develop after harvest making cool chain management essential. Wet hessian bags or weights are often placed on the top of asparagus-filled crates to prevent the horizontally laid spears from bending upwards in search of light before packing. Full crates are sometimes passed through a pre-wash to loosen any dirt or debris and help reduce any field heat before packing.
Traditionally, asparagus was sorted and packed manually. However most growers now have computerised grading systems. The spears are placed onto a header belt with all the spearheads touching the top edge so that they can be trimmed to a set length (24 or 25cm).
The spears are washed thoroughly with clean water, straightened and loaded into individual cups of the grader. Any spears with obvious defects are removed at this stage. A photo is taken of each spear and the computer measures the length and diameter of the spear and the presence of white on the butt, then it designates a chute where that spear will be released. Spears that are too short, or still have a white butt, pass through the line and are trimmed at a later stage. Spears are collected from the chutes and packed according to their grade and market destination.
For export, loose and bunched spears are packed upright into specially designed wooden boxes. For the domestic market spears may be packed, loose or bunched, into polystyrene rectangular boxes. Alternatively they may be packed into recyclable ‘pyramid boxes’, which have a flared base to accommodate the asparagus butts that are thicker in diameter than the spearheads.
Once packed, the asparagus is hydro-cooled to remove any field heat and prolong shelf life and immediately placed in cool storage. Maintenance of the cool chain is vital to prevent continued growth of the spears and deterioration in quality and storage life. Pallets destined for export are sent by refrigerated transport to Sydney, Melbourne or Brisbane airports.
ASPARAGUS PACKING UK
Asparagus Grading
The asparagus is then trimmed to remove any white or toughness at the base of the stem and graded by thickness. We grade and pack by thickness to ensure that it cooks perfectly evenly. The spears are graded using the latest camera imaging technology.
Asparagus Packing
Our asparagus is predominantly bundled in 250g bunches, secured by rubber bands at the top and bottom of the bundle, finished with a branded wrap label with size and grade information. Sizes range from the thickest “Jumbo” (18mm+), through Extra Select (16-18 mm), Select (12-16 mm), Choice (8-12 mm) and Sprue (6-8mm). We also pack kitchen grade, which is mixed sizing 8-12 mm and 12-20 mm, and is just a little bit bent or slightly open-headed. Our graded asparagus can also be provided ‘loose’ in 3kg boxes. This is our standard and recognised packaging, but you can tell us exactly what you want and we can tailor our packing to your needs.
Asparagus Transportation
We run our own refrigerated lorry, as well as using a reliable national refrigerated transport company who work from their base in Lincolnshire 7 days a week.
Asparagus Storage
During the whole process, we ensure the temperature of our asparagus remains between 2° and 4°C to maintain its freshness. Once it has left our care, we ask customers to remember to store asparagus in a similarly cool place in order to enjoy it at its best.How Does Asparagus Grow?
Asparagus plants grow more like fruit trees, instead of like most other vegetables. Let me explain! When an asparagus plant establishes itself, it forms a crown underground. The roots grow from the crown, which is also where the buds form. Buds are crucial to the success of the plant since each bud results in one individual asparagus spear. Over time, the crown grows larger and larger because every time a new bud is formed, only one asparagus spear will form from that.
Asparagus Harvesting & Packing
To take a glimpse into the world of asparagus harvest and packing, see the detailed video below.
Asparagus Harvesting
Is all asparagus ready for harvest at the same time?
Since asparagus spears grow at random, an entire field is not ready for harvest at one time. The harvesters have to walk the fields and determine which asparagus meet the quality requirements (e.g., maturity stage, height) and are ready for harvest. The asparagus that are not yet ready for harvest will be left in the field, and the harvesters will return days later once those spears are ready for harvest.
Asparagus Harvesting - Selecting Spears
How is Asparagus Harvested?
The harvesting process consists of the workers walking through the fields with an asparagus knife and when the asparagus spear is ready for harvest, the workers slide the asparagus knife underneath the soil mound to make the cut. They do this because if they were to make the cut above the soil, the plants acts as though it will rejuvenate another spear from that same bud and continues utilizing plant resources to attempt to make that happen. However, as we learned previously, no two spears arise from the same bud.
Asparagus Harvesting - Using the Asparagus Knife
Once the spears are harvested, the workers place them into the harvesting buckets that they wear over their shoulders. Once those fill up, the harvesters empty them out on the soil mounds and form piles of asparagus. Another portion of the harvest crew goes through the field and picks up the asparagus and places them into bins, which are then transported to the packinghouse.
Asparagus Harvesting - Picking Up Harvested Spears
Asparagus Harvesting - Loading Asparagus Spears into Bins
Asparagus Packing
The asparagus arrive at the packinghouse in the field packed bins. From there, they are either ran through a manual packing line or an automated packing line. The goal of being ran through either packing line is to result in rinsed asparagus that is sorted into bunches based on the diameter of the asparagus spear. When the bunches are packed into boxes, they are packed by the size of the spear. You have probably never seen asparagus come in boxes like these, but they are just filled with the asparagus bunches that you buy at the grocery store.
Asparagus Packing - Packed Asparagus
Asparagus Packing - Packed Asparagus
Box Formation – The boxes are formed on site. They are then transported overhead to both the manual and automated packing lines for easy access to the packers.
Asparagus Packing - Box Formation
Bin Removal – The asparagus is manually removed from the field packed bins and placed on the packing line.
Asparagus Packing - Bin Removal
Initial Trim – The asparagus go through an initial trimming step to make them a more uniform length.
Asparagus Packing - Asparagus Spear Trimming
Wash Step – After being trimmed, the asparagus go through a single-pass rinse step using sanitized water.
Asparagus Packing - Rinse Step
Sorting – In the manual packing line, the workers sort out the individual asparagus spears based on their diameter.
Asparagus Packing - Hand Sorting Asparagus
In the automated packing line, a machine does this. Each spear is placed into its own cup (workers are needed to make sure there is only one spear per cup for measuring purposes), and goes through an optical sorter that sorts the spears based on diameter and drops them into collecting containers.
Asparagus Packing - Optical Sorter
Asparagus Packing - Collecting Containers
Asparagus Packing - Automated Sorted Asparagus Bunches
Packing into Bunches – In the manual packing line, workers take the sorted asparagus and create bunches based on spear diameter. When doing this, they use a tool that helps shape the bunch and easily place the rubber bands around them. They are then transported overhead and pass through a second trimming step to make them more uniform in length.
Asparagus Packing - Forming Asparagus Bunches
Asparagus Packing - Bunch Cutting Asparagus
In the automated packing line, workers move the sorted asparagus from the collecting containers into separate containers on the packing line, so that they can be transported to have the rubber bands mechanically placed around the bunches.
Quality Assurance – Random bunches are selected and weighed to make sure they meet the customer weight specifications.
Asparagus Packing - Quality Control
Packing into Boxes – In both scenarios, workers pack the bunches into boxes based on the diameter of the asparagus spears.
Asparagus Packing - Packing Asparagus Boxes
Labeling – Once full, each of the boxes are labeled to indicate the packing date.
Asparagus Packing - Labeling Packed Asparagus Boxes
Quality Assurance – The final quality assurance step consists of weighing the packed boxes. This step is performed to verify that the box weight meets the customer specifications.
Asparagus Packing - Quality Control
Hydrocooler – The packed asparagus boxes are closed and ran through a hydrocooler. The hydrocooler works to remove the field heat and to quickly cool down the asparagus.
Asparagus Packing - Hydrocooler
Cold Storage – The hydrocooled boxes arrive at the cooler, where they are palletized by box size and shape. They are stored in the cooler until transport.
Asparagus Packing - Palletizing
World’s largest grower of asparagus: Altar:
We are a family owned and operated business committed to offering the very best quality fruits and vegetables.
Starting in 1955 with only 20 Acres and by packing asparagus under the shade of a tree, Altar has grown to become the world’s largest grower of fresh asparagus with over a dozen state of the art packaging and transportation facilities. This same vision was applied when expanding into our other commodities, which include green onions, brussel sprouts, grapes, parsley, broccoli, avocados, cilantro, radish, spinach and more.
With over 60 years of experience, growing, packing, and shipping, we can guarantee the highest quality fruits and vegetables exceeding your expectations in flavor, color and freshness.
60+
YEARS OF EXPERIENCE
12,000+
HECTARES IN MEXICO
68,500
TONS OF ASPARAGUS PER YEAR
Asparagus
We were the first to pioneer and introduce asparagus into Latin America.
Our family was the first to introduce asparagus into Latin America. Currently, we have 12,952 Hectares planted in Mexico producing more than 68,500 Tons of fresh green asparagus per year yielding more than 11 Million 5kg cartons.
Mexico
CABORCA SONORA ASDF
2429 Hectares
IRAPUATO ASDF
4047 Hectares
SAN LUIS R.C, SONORA
2024 Hectares
SONOYTA
607 Hectares
MEXICALI B.C
1012 Hectares
ENSENADA
809 Hectares
CIUDAD CONSTITUCION
2024 Hectares
mexico-map
Peru
Peru offers many production advantages, primarily the flexibility of harvesting different regions. Currently, we produce more than 5 Million 1kg cartons of fresh green asparagus.
Year Round Production
Two harvesting regions per season minimizing any production gaps.
Asparagus circular grader Easy Grade: mechanical grading machine, it can be used by a single operator. Cut, wash and calibration within 1,5 sqm only. The washing tunnel has 14 spray nozzles. Selection of 4 changeable calibers.
Electronic asparagus sorter: these sorters may have up to 128 outputs, with the combination of the calibration parameters (diameter, length, color, bending, withering, color of the collar, the shoot color). They can be completed with the washing tunnel (up to 60 high pressure nozzles) pre-cutting and cutting systems to suit the specific needs of each client. We have been harvesting asparagus since 2005 and are proud to be one of the UK’s largest and most innovative asparagus growers. With our advanced technology and enterprising packing techniques, we are able to lock in the freshness immediately after harvesting, and offer beautifully presented and consistent end products. Leading the market in supplying asparagus from February until November, our autumn asparagus has been very well received by chefs, food writers and the public alike. We also grow asparagus in Norfolk and Suffolk and supply locally, to national supermarkets, and to the wholesale markets.
SOLID BOARD ASPARAGUS PACKAGING FOR TRANSPORT AND SALES
SOLIDUS SOLUTIONS has developed Small Portion Pack (SPP), a specific solid board concept for asparaugs packaging. The new SPP design, that can be used as transport as well as sales packaging, ensures that the delicate asparagus do not slide against each other during transport and that the vegetables are optimally presented in the store.
Fruit & vegetables
Asparagus packaging for transport
Safe and fast
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The new asparagus packaging helps with the protection of your product. The asparagus cannot move, therefore, cannot break inside the box. There is also sufficient space between the tip of the asparagus and the upper part of the SPP in order to protect the product anytime, also during the transportation process.
The asparagus remain fresh since it is possible to pack the asparagus in refrigerated rooms with curtains of mist. Our SPP, made of recycled solid board, is eminently suitable for cold and humid environments.
The Small Portion Pack (SPP) is can be set up manually and is easy to fill thanks to the “open close system” of the package. The packing process is therefore more environmentally conscious and more efficient compared to other packaging materials, such as corrugated board, which also requires an extra plastic bag to fill the box in a food-safe way.
Manual construction
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Asparagus packaging for sales
Retail ready packaging (RRP)
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The retail ready asparagus packaging (‘Retail Ready Packaging’) lead to a potentially higher turnover and lower costs in your logistics chain. By using the SPP, which is specifically produced for small quantities (1-2 persons), you make life easier for the consumer. In addition, profitability improves from the factory floor to the supermarket, by reducing costs in the supply chain and improving availability on the shelf.
This solid board packaging is also excellent to print with the highest quality printing techniques. The recesses at the top and bottom ensure good visibility of the asparagus and optimal product presentation.