Tasteful Inventions: October 2008

Thursday, October 23, 2008

Nicolas Appert: Father of Canning

Two hundred and forty eight years ago today, a boy, who is now said to be the "Father of Canning," was born near Paris, France. Nicolas François Appert, was a son of an inn-keeper whose roots were firmly planted in farming. Nicolas had a uncanny sense of discovery. As a young boy, his family's farm provided the natural exploration he craved. Like their ancestors before them, Nicolas Appert and his eight siblings new life on the farm meant hard work. It also had its rewards, which young Nicolas learned quickly to preserve. Sadly, there isn't much information available about Appert's young life. I did find the following information at the French version of wikipedia which has been translated to English.

Nicolas Appert was familiar from his youth with the trades of cook and confectioner, and patterns of food storage. After spending 10 years in Germany, Karlsberg Castle of Christian IV of Deux-Ponts-Birkenfeld, he moved to Paris in 1784 and opened at 47 rue des Lombards, a boutique confectioner called Fame. As a store retailer, after a few years, Appert becomes wholesaler, employs six staff and correspondents in Rouen and Marseille. After engaging in revolutionary action (from 1789 until 1794 (when he spent 3 months in prison), he focused his work on solutions to conserve wine. Taking into account several criteria (change in taste, cost and nutritional value,) in 1795 he developed the process which made possible the art of Appertizing, or preserving food sterilized by heat in a hermetically sealed containers, canning which is also called tinning.

“if it works for wine, why not foods?”

Perhaps, we should reflect on how canning influences our daily lives. I don't take canned foods for granted. Do you? First thing in the morning I reach for a canned pound of coffee. How many times have you sat down to a quick lunch of tomato soup and a tuna fish sandwich? If you chose to whip up a batch of "home made" tomato soup, I bet there's a slew of canned vegetables in the pantry, canned tomatoes included. I don't know about you but, when I have such an inviting lunch before me, I need a glass of milk. Anyone for some chocolate milk. Hershey's comes to my mind, canned. I'm sure, like me, you don't give much thought to opening a can whether it be with a a rotary opener or the more modern day electric can opener (which also has a fascinating history. see below:) So, what is "the art of canning?" Where does it belong in the timeline of the Historical Origins of Food Preservation?

...Canning is the process in which foods are placed in jars or cans and heated to a temperature that destroys microorganisms and inactivates enzymes. This heating and later cooling forms a vacuum seal. The vacuum seal prevents other microorganisms from recontaminating the food within the jar or can. Canning was the newest of the food preservations methods being pioneered in the 1790s when a French confectioner, Nicolas Appert, discovered that the application of heat to food in sealed glass bottles preserved the food from deterioration. He theorized “if it works for wine, why not foods?” In about 1806 Appert's principles were successfully trialed by the French Navy on a wide range of foods including meat, vegetables, fruit and even milk...

It is my belief, if it weren't for the fact the French government offered a prize of 12,000 francs for a method of preserving food, Appert's memory may have faded into canning oblivion. “An army marches on its stomach,” it was because of Nicolas Appert's dedication to finding a way to keep the French Army and Navy bellies fed that he experimented by trial and error with the container sterilization of food. Feeding the servicemen safely was very important to Napoleon Bonaparte. It took Appert approximately 14 years to perfect his method. According to food author Jane Grigson, as reported in the British newspaper The Observer, "François Appert (Nicolas) grew his own tiny peas to be sure of their perfect freshness when he processed them." It was a long time ago so no one is firm on the exact date but, it is said he was awarded the prize of 12,000 francs from the now Emperor Napoleon around 1810...

Nicholas Appert’s invention was tremendous; however, he did not fully understand it. Although, Appert was the first to successfully can meats, fruits, and vegetables it wasn't until another Frenchman by the name of Louis Pasteur unfolded the secret of food spoilage that it was fully understood others.

By the mid-1800's canning was fairly widespread as a commercial industry, yet for average middle class people, canned food was little more than an expensive novelty. The technology of the day was a far cry from what we know now. Cans were heavy, stoppered with cork and often sealed with lead, which, as any member of the Franklin Expedition would have told you, was downright hazardous to your health. The interesting thing about canning in those days was that nobody knew how it actually worked. Sure people understood that in order to preserve food it was essential to keep air away from it, but they didn't know why. No one had any concept of microbes then (Louis Pasteur had yet to undertake his groundbreaking research), and most people ascribed food spoilage to the theory of spontaneous generation. source
It was thought that the exclusion of air was responsible for the preservations. It was not until 1864 when Louis Pasteur discovered the relationship between microorganisms and food spoilage/illness did it become clearer. Just prior to Pasteur’s discovery Raymond Chevalier-Appert patented the pressure retort (canner) in 1851 to can at temperatures higher than 212ºF. However, not until the 1920’s was the significance of this method known in relation to Clostridium botulinum. source

Nicolas Appert never actually reaped the full benefits of his methods. Yes, with his prize money he opened the first commercial cannery in the world and his system of sealing food in glass bottles and subjecting it to heat, was described in a book published, with Charles Appert, in 1810, L'Art de conserver les substances animales et végétales. In 1920, The Book for All Households; Or, The Art of Preserving Animal and Vegetable substances for Many Years was translated into English by K. G. Bitting, M.S. Bacteriologist, at the Glass Container Association of America. The full text is available at google books online.

The art of Appertizing, or preserving food sterilized by heat in a hermetically sealed container, was conceived a little more than a hundred years ago as a war measure to provision the French forces upon the sea. It played a most important part in provisioning the armies in the recent war and in providing succor for the millions of starving civilians. But this role is far less beneficent than is the furnishing of good, wholesome, palatable, nutritious food at all times and at any place under peace conditions.

"Until the 1920’s, canned foods remained primarily for military usage. It was during WWI that the American government campaigned citizens to grow and can food at home so more supplies would be available to the armed forces fighting overseas. From this came the slogan, “Back up the cannon with the canner.* If necessity is indeed the mother of invention, then, the timeline of commercial canning must include Emperor Napoleon and his army. Today, we must be careful when scouring grocery shelves not to tumble the stacks into the aisles. From soups to canned fruits, dog food and Spam, canned food is as much a part of our American culture as Andy Warhol's tomato soup posters. So the next time you reach for a can of anything, remember, you have Nicolas Appert to thank. As a matter of fact, each year on October 23, Canned Food Day and National Canning Day are celebrated in tribute to young Nicolas François Appert, who became the "Father of Canning."  Maybe he isn't forgotten...

FYI: The first tin cans, invented in 1810, were heavy-weight containers that required ingenuity to open, the directions on the can read, "Cut round the top near the edge with knives, a chisel and hammer or even rocks!" Not until 1858, when canners started using thinner metal, did Ezra Warner invent an instrument dedicated to opening cans, the can-opener. Yes, dear reader, cans were invented before the can-opener!

Resources

  • 1. Can Can: History of Cans
  • 2. Forgotten Inventors: the can opener
  • 3. What Can a Can Be Besides a Can?
  • 4. The Observer article
  • 5. Nicolas Appert
  • 6. Canny Cooks

Monday, October 20, 2008

Bars & Stripes: They Have My Vote

Like most, you probably never gave much thought to the Technology of the Bar Code. I mean really, why would you? I certainly hadn't, until, last week. It isn't like they aren't everywhere. Indeed they are. Don't believe me? Make a beeline over to the fridge and grab some milk. Hey, while you're at it, pour yourself a glass. Mmmm...good huh? Carefully put the milk back where you found it and take notice to the mysteriously coded label attached to the container. Yes, its those numerically coded bars, which are darker, and stripes, which are lighter. Just like this one.

This portion of the bar coded Presidential Election cup was purchased at a local 7-11 convenience store here in New York and given to me as a gift. Actually, I had two, one of each. I'm not a 7-11 type person although, I'm not real sure as to what a 7-11 type person is. Frankly, I don't buy anything in 7-11 and that's the reason why someone gave me the cups. Anyway, my first instinct was to say thank you and pretend to admire them. "Cool," I said. As I was twisting one around, I noticed the blue arrow with the words above it which read, This is How We Count Your Vote! It seems, whether your pouring for Obama or pouring for McCain, 7-11 has your number. The convenience store has been doing this for the past three elections by keeping track of which cup out sells the other. For some, the 7-11 coffee cup poll is the only one they trust. How does it work? Simple, they tally the bar codes.

In some form or another, bar codes or more "officially" called Universal Product Codes have been around since the 1890 U.S. Census. Granted, they weren't as sophisticated as they are now but the theory was pretty much the same beginning with punched cards. The daunting task of "How do we keep track of something that is forever on the move?" began with a thesis written by Wallace Flint who envisioned a way of automating the grocery checkout process. I guess it makes sense. The most noticeable to me is the lack of inventory sales retail stores once had from season to season. Everything in the store went on sale. Then the store would close for at least two days and inventories were laboriously conducted. In very basic terms, the department stores then had a fairly good idea of which products were selling and which needed to be ordered. Wallace Flint's idea proved to be too costly in the 1930's but, he is credited with the laying the foundation for the barcode through his detailed thesis and drawings. He also played a supportive role in the initial use of the Uniform Product Code (UPC) as vice-president of the National Association of Food chains some 40 years later.

In 1932 an ambitious project was conducted by a small group of students headed by Wallace Flint, son of a Massachusetts grocery wholesaler, at the Harvard University Graduate School of Business Administration. Wallace Flint wrote a master's thesis in which he envisioned a supermarket where customers would perforate cards to mark their selections; the punched cards were then handed to a checker who placed the cards into a reader. The system then pulled the merchandise automatically from the storeroom and delivered it to the checkout counter. A complete customer bill was produced and inventory records were updated. source

The "Bullseye Code"

Perhaps, Bernard Silver, of Philadelphia PA was listening under the eaves of a partially opened window at Philadelphia's Drexel Institute of Technology when he over heard a conversation between a local grocery store manager and one of the deans at the school. It seems the grocery store manager was seeking a more convenient way of logging information about his customers purchases. Now, we all know eaves dropping is impolite. Actually, it is quite rude to listen to someone else's conversation. Perhaps even ruder was when Silver decided to "dish the dirt" to his friend Norman Joseph Woodland, a twenty-seven-year-old graduate student and teacher at Drexel Institute of Technology. Both young men were intrigued by the request of the grocery store manager. Woodland ran with the idea. Really, he did. He hightailed it to a nice quiet beach front community in Florida and got to work.

His first idea was to use patterns of ink that would glow under ultraviolet light, and the two men built a device to test the concept. It worked, but they encountered problems ranging from ink instability to printing costs. Nonetheless, Woodland was convinced he had a workable idea. He took some stock market earnings, quit Drexel, and moved to his grandfather's Florida apartment to seek solutions. After several months of work he came up with the linear bar code, using elements from two established technologies: movie soundtracks and Morse code. source

Problem solving is often a motivating source of inspiration. Communication is still another. Morse code is a combination of them both. So what is Morse Code and how does it relate to Universal Product Coding? According to wikipedia, Morse Code is a method for transmitting information, using standardized sequences of short and long marks or pulses, dots, dashes and spaces. Dots, dashes and spaces are arranged in such a way to represent letters, numbers and even punctuation marks.

These codes have an alphabet made up of dots and dashes in various combinations which stand for individual letters. The Morse Code is so widely used that it does not qualify as a "secret" language, but it can be very mystifying to one who does not know it. It has a definite advantage over the Semaphore Code in that it can be sent in many ways--by whistle, buzzer, tapping, flags, or even by using the clenched and open hand during daylight hours. By night, lights of any kind can be used. source

Morse Code is not considered a secret language for the same reason that shorthand, ASCII code (American Standard Code for Information Interchange:) and bar coding are not. All of these methods of character coding are universally standardized and easily available to anyone who chooses to learn and use them. Scouts have their own form of secret messaging. Then we have the Pigpen Cipher and the code breaker. All forms of encryption. Sound familiar?

On October 20, 1949, fifty nine years ago to the day, "gossip monger" Bernard Silver of Philadelphia PA and Norman Joseph Woodland of Ventnor, NJ filed an application patent for a Classifying Apparatus and Method." An invention which "related to the art of article classification." You can see their patent #2,612, 994 and diagram at the google patent website. Here is the introduction to their invention:

This invention relates to the art of article classification and has particular relation to classification through the medium of identifying patterns. It is an object of the invention to provide automatic apparatus for classifying things according to photo-response to lines and/or colors which constitute classification instructions and which have been attached to, imprinted upon or caused to represent the things being classified.

On October 7, 1952, Norman Joseph Woodland and Bernard Silver were granted their patent. The "Bullseye Code" patent was Bernie and Norm's solution to an inventory tracking system. It was a "series of concentric circles that were scannable from all directions, using regular light." You can learn more about the History of Bar Coding at the Barcoding Inc. website which shares some insight from the inventor himself Norman Joseph Woodland.

Understanding Bar Codes may seem a bit confusing at first. But, once you get the hang of it, you too can learn to decipher the hidden message on the Presidential Election cup. Below, are a few "rules."

"A Universal Product Code (UPC), also called a bar code, is a product description code designed to be read by a computerized scanner or cash register. It consists of 11 numbers in groups of "0"s (dark strips) and "l"s (white strips). A thin bar consists of only one strip; thicker bars consist of two or more strips side by side. The first number in the code describes the type of product. Most products begin with a "0"—exceptions are variable weight products such as meat and vegetables ("2"), health-care products ("3"), bulk-discounted goods ("4"), and coupons ("5")-Since it might be misread as a bar, the number 1 is not used. The next five numbers describe the product's manufacturer. The five numbers after that describe the product itself, telling its color, weight, size, and other distinguishing characteristics. source

Breaking the Code

We have barely touched upon the long history of the bar code. It would not be until June 26, 1974 that the first bar code item would slip through the register at the local grocery store in Troy Ohio. It seems kind of ironic that the first item to be scanned by the $10,000.00 unit would be a pack of Wrigley's chewing gum. Sticky fingers, secret codes, what's next Human bar-coding? UPC codes are everywhere now. Sometimes in the most obvious places and sometimes hidden. Sure we may now be aware of the bar codes found on grocery items, library books, sale items, and even pieces of luggage. You may be surprised to discover some of the less obvious uses. Rental cars have hidden bar codes attached to their bumpers. Honey bees have had teeny tiny bar codes attached to their wings to spy on their mating habits. I've left a few links for you to explore more about bar codes and their uses below. Have FUN breaking the 7-11 code.

Resources

  • 1. Bar Code History
  • 2. U.P.C. Uses (you may be surprised to discover other uses for barcode technology)
  • 3. Morse Code and Phonetic Alphabets (make up your own)
  • 4. Alphabet to Morse Conversion (try your luck:)
  • 5. Bar Code Controversy