Scared to eat that lettuce? Robots & AI are coming to the rescue

12 Dec, 2018

Scared to eat that lettuce? Robots & AI are coming to the rescue

2018 has been quite a year for food-borne illnesses. What’s even more disturbing than the sharp rise in food safety investigations (the CDC has investigated a shocking 22 food safety investigations to date) is the fact that food safety could have—and, yes, should have—been dramatically improved with the help of the newest advancements in robotics, automation, and AI (RAAI). In an age when technology is better skilled than ever to improve food safety and keep us healthy, having more investigations in a single year than we’ve seen in well over a decade seems particularly outrageous.

But there is a glint of good news in all of this mess. While it may appear that food-borne illnesses are on the rise, according to Dr. Scott Gottlieb, the commissioner overseeing the FDA, it’s not that food sources are becoming inherently less safe, but rather that the CDC has "better technology than ever before" to investigate each outbreak and trace which food-borne bacteria has caused any particular illness across the country. In other words, while there may have been a similar amount of illness occurring in the past, it wasn’t until now that the CDC has been able to accurately identify what was causing each outbreak, and therefore what food consumers should avoid.

That’s a definite plus, but an even bigger benefit of the latest advancements in RAAI is that they promise to not only make it easier and faster to track the source of food-borne illnesses, but also to help prevent them from happening in the first place.

Consider this: for just one head of lettuce to move from farm to table, it must travel across a long and labor-intensive supply chain. At every step along the way—planting, harvesting, processing, packaging, and distribution—there is a plethora of opportunities for contamination, whether from human contact, pollution, bacteria, insufficient refrigeration, or other causes. Thanks to recent innovations in robotics, automation, and AI solutions for the supply chain industry, RAAI is already capable of dramatically diminishing those opportunities. Here are just a few examples:

  • Farming

    Farmers are now using robotic sensors that can be used right in the fields to analyze variables such as microbial water quality, soil acidity, and temperature in real time. (That’s the very data that could have alerted farmers to the presence of E. coli long before a single head of lettuce was picked, packed, shipped, and served.) At the same time, AI-powered robots and drones are enabling precision agriculture to identify when water, pesticides, and fertilizers are needed—plant by plant—to reduce costs and increase yields.

    Germany’s LumoVision recently launched the first optical sorting technology that is able to identify grains that have been contaminated with aflatoxin—a mold that, according to the International Food Policy Research Center, has caused about 155,000 cases of cancer. Just one grain infected with aflatoxin can poison a whole harvest, but it can’t be seen, smelled, or tasted by humans. The LumoVision solution uses cameras and ultraviolet lighting to optically sort even the smallest gains to identify this dangerous mold and eliminate contamination by up to 90%.

  • Processing

    After crops are picked, robots can be used to maintain safety during processing. Unlike their human counterparts, robots can process food germ-free. Because they are unaffected by extreme temperatures or chemicals, robots can be easily sterilized throughout the day, and automated temperature readers can be used to record and manage the temperature of the environment and the food itself to help prevent food-borne pathogens from moving through the supply chain. The big four industrial robotics companies, Fanuc, ABB, Yaskawa, and Kuka, are all developing a growing range of food-grade robots, a rapidly evolving market. According to the IFR, more than 10,000 robots were sold to the food and beverage industry in 2017, up 19% YoY. Yet this was less than a twentieth the number of robots purchased by the automotive and electronics industries. By detecting and addressing environmental and physical defects at the processing point, food processors can improve quality and overall food safety.

    ROBO Global Index member John Bean Technologies (JBT) is a leader in continuous cold processing—a method that is helping ensure food safety within the fast-growing super-premium juice market. In continuous cold processing (or raw processing), fruits and vegetables are fed constantly into the production line to supply a continuous stream of juice for blending, filling, and high-pressure processing. JBT’s unique process enables ‘Clean in Place’ (CIP) systems that are used by many food manufacturers to wash and sterilize equipment. At the same time, it eliminates the need to disassemble and clean each line, either when a new raw material is introduced for processing or at the end of the day. Continuous cold processing significantly improves food safety for consumers, while also reducing downtime, cutting costs, and increasing margins for the manufacturer.

    ROBO Global Index member Krones AG offers customized process technologies for breweries, beverage bottlers, and food producers all over the world—all of which are designed to support food safety. The company’s aseptic system uses a hydrogen-peroxide-based sterilization process to fill bottles germ-free. And because the automated system doesn’t use a single drop of liquid throughout the entire production process, it significantly enhances microbiological safety.

    GEA Group, another ROBO Index member, has a wide range of experience in product sterilization by direct-steam injection. A leader in providing end-to-end solutions to dairy farmers with milk collection and storage, its computer-controlled milking solutions simplify the process of maintaining a clean, hygienic environment to deliver the highest milk quality. GEA also designs, engineers, and supplies complete plants, processing lines, and equipment for treating raw milk that is designed to meet strict hygiene and food safety standards.

  • Distribution

    If, despite the latest technologies to prevent a food-borne illness from reaching a consumer’s table, an outbreak does occur, RAAI is again at the ready to help protect us. Following the highly publicized E. coli outbreak that was linked to restaurant chain Chipotle in late 2015 and early 2016, investigators used whole genome sequencing (WGS) to quickly identify the DNA fingerprint of the STEC O26 bacteria that caused the outbreak and to trace its origins.

    NGS, or next-generation sequencing, from companies like ROBO Global Index member Illumina, takes this capability even further, enabling scientists to learn the complete microbial makeup of any sample, providing even greater traceability. In contrast to WGS, which looks at the entire genome, NGS looks at multiple genetic markers. When used in conjunction with AI and machine learning, this method can be used to do everything from screen for food-borne pathogens to accurately predict the safe shelf life of a particular crop. For small genomes, DNA libraries can be prepared, sequenced, and analyzed in as little as 2 days.

There’s no doubt that keeping our food supply chain safe should be one of our highest priorities—for the food producers, consumers, and the FDA. But while RAAI can already deliver the solutions needed to make this happen, adoption has not been as rapid as it should be. That fact could present an opportunity for investors. A recent study by the Packaging Machinery Manufacturing Institute found that 9 out of 10 processing and packaging companies are using robots and AI to improve food safety. Yet recent outbreaks have indicated that that effort isn’t enough—by a long shot. Companies at every point in the supply chain are under massive consumer pressure to improve food safety, and the only real way to achieve that goal is to apply robotics, automation as AI. The shift toward RAAI is already in motion, and to keep us all safe from E. coli and other food-borne threats in the future, it seems the only possible trajectory for adoption is up.

By Lisa Chai, Senior Research Analyst, ROBO Global