Farm 432: Farming insects for food to feed the future

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Entomophagy is “the human consumption of insects and arachnids as food” according to Now don’t get squeamish, but this may very well be the future for feeding the world. Did you know that there are an estimated 10 quintillion (10,000,000,000,000,000,000) insects (about 900,000 species) on the planet according to Smithsonian Information? That seems like a wonderfully massive untapped source of animal protein that would be valuable for feeding the world’s growing population. Even with today’s current food production technology, it’s becoming increasingly difficult to feed our exploding population. Producing the kind of protein that we need using animals like cows, chickens, and pigs is resource intensive and problematic, and many scientists believe that entomophagy will play an increasingly important role in keeping up with this task. In fact, countries in Central America, South America, Africa, Australia, and Asia have long since made insects an integral part of their diets. All that is left is for North America and Europe to join them. Did you know that we already consume trace amounts of insects in our food (the FDA states that “it is economically impractical to grow, harvest, or process raw products that are totally free of non-hazardous, naturally occurring, unavoidable defects” which includes insect parts)? Additionally, if we start to look at insects as the “shrimp” of the land (insects, shrimp, lobsters, and crab are all a part of a group or phylum called arthropods), maybe we can learn to get over our aversion and start including them as a part of our diets. (FYI – there are actually a few restaurants in the United States that serve insects, but they are obviously not commonplace).

Farm 432 (developed by Katharina Unger from Austria) is the type of device that we may see in the future to help rear these insects in order that people may farm their own insect food.

This video shows how the device works (from LivinStudio which was established by Katharina Unger). Because black soldier fly larvae have a high protein (42%) and fat (32%) content along with calcium, vitamins, amino acids and minerals, Ms. Unger focused on rearing these insects as food using Farm 432.

After 432 hours [18 days], 1 gram of black soldier fly eggs turn into 2.4 kilograms of larvae protein, larvae that self-harvest and fall clean and ready to eat into a harvest bucket.  Black soldier fly adults don´t eat, therefore they don´t have any mouth parts and do not transmit any disease. The larvae can be fed on bio waste, therefore the production almost costs no water or CO2. Black soldier fly larvae are one of the most efficient protein converters in insects…


The device has a Metamorphosis Box located on the top (the colander-like cup) in which the soldier fly pupae (the stage before an insect becomes an adult) are placed until they “hatch” into adults. From there they fly out of the box and mate in the clear chamber. The female flies are then apparently attracted to a scent perhaps from a food source (according to the video) that encourages them to lay their eggs in the Egg Containers. Larvae hatch from the eggs and drop down into the lower part of the device where they feed and grow until the last larval stage where they migrate up the Migration Ramp…


…and can then be harvested from the removable cup (the Harvest Bucket). Out of each batch, you can harvest some of the larvae for food and place the others into the Metamorphosis Box where those larvae will pupate thus starting the process over again. “The volume is configured to breed about 500g of harvest per week. This makes about 2 meals.”

In the future, we may see this type of device in kitchens and in businesses rearing insects for food. Currently, Farm 432 is in its Beta version and is unavailable for purchase but will be headed for production soon (according to LivinStudio). It looks like it is being used or tested in China and Malasia according to Ms. Unger’s twitter posts.

It is important to note that not all insects are safe for eating.  Brightly colored insects are often a sign of being poisonous. However, there are at least 2037 edible species according to a comprehensive survey of literature performed by Mr. Yde Jongema, taxonomist at the Department of Entomology of Wageningen University, the Netherlands.

There’s a lot of information available about entomophagy. If you are interested, the following links are just a handful: Countries That Eat Bugs (U.S. News & World Report), Eating Insects Isn’t as Eco-Friendly As People Say (Time), We’re Outnumbered (University of California, Agriculture and Natural Resources), What’s stopping us from eating insects? (Scientific American blogs), Insects are Food: Entomophagy is the future, and Edible insects: Future prospects for food and feed security (Food and Agriculture Organization of the United Nations).

With the huge economic impact from crop losses due to insects, isn’t it time we turned the tables on them and have them for dinner? 🙂

20 thoughts on “Farm 432: Farming insects for food to feed the future”

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  2. A co-workers often brings in “cricket flour cookies”. Honestly they taste good, I just don’t like knowing what they are made of.

    1. Now you have a great excuse for eating cookies – you’re getting the protein that you need!

      I think that grinding insects up into flour and incorporating them into baked goods would be the only way that I could get any of my family members to try them.

  3. OK, but how do I tell my vegan friends they’re still eating animal protein?

    I’ve got one vegan friend who is so strict, he won’t eat honey because it’s an animal product.

      1. Yes, insects are considered animals. Sandee, even though you’re vegan friends are still eating trace amounts of insects (even in organic food or food grown in your garden), they are as close to being purely vegan as a human being can be! Besides, eating insects is very healthy!

          1. I think some day insects will be farmed for food. And processed into a soy protein like tofu.

            But I think it will mostly be larva. Not necessarily full-grown insects.

            And it will be hard to tell the source.

            And it will be a very cheap source of protein.

          2. @Kathleen: I can see it happening one day, but honestly by the time society would change enough I think it’d be more efficient to just grow meat (of whatever type you want) directly in a vat.

  4. It also depends on the culture and what’s normal to eat in a particular region/country… Since there are already places in the world where insects are a normal part of the local diet…

    Some cultures, primarily in Africa, Asia and South America, even rely on creepy-crawlies as their main source of protein.

    But, like any food type, there’s proper ways to eat it that must be observed… Like meat you have to be careful about parasites, etc in insects and thus you shouldn’t just eat any bug in the wild and many have to be raised in captivity to be ensured of safety… but cooked till thoroughly crispy usually makes most safe if a bit crunchy and hard…

    Anyway, if you’re not ready for it then just be very careful what you order while traveling abroad… especially anything heavily covered, like candy or in thick sauces…

      1. Well, it does depend where on the food chain they reside… The bigger and higher up on the food chain the insect is then the more likely it’ll have a parasite or pathogen but lower and it can be safe…

        More than 1,400 species of insect have been confirmed as safe to eat, but that’s out of 900,000 known insect species worldwide… Though, more can be considered safe with proper preparation and cooking, which even helps with the venomous ones as cooking changes the chemistry and most of the limitations are on eating them raw…

        But ants, certain worms and grubs are usually okay… but keep in mind under survival conditions it’s eat or starve and you mainly have to worry about things that will make you sick right away but unless your immune system is weak then you can usually tolerate some things, at least long enough to try to make it back to civilization and then see a doctor…

        Though, you also have to worry about where the insects came from as backyards and farms use pesticides that you wouldn’t want to ingest…

  5. One of my favorite lines from Dracula (the book) sprang to mind…

    His method of tidying was peculiar: he simply swallowed all the flies and spiders in the boxes before I could stop him. It was quite evident that he feared, or was jealous of, some interference. When he had got through his disgusting task, he said cheerfully: “Let the lady come in,”

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