Thursday, March 3, 2011

Introduction of Single Cell Protein

The term Single Cell Protein (SCP) refers to the dried microbial cells or total protein extracted from pure microbial cell culture (Algae, bacteria, filamentous fungi, yeasts), which can be used as food supplement to humans (Food Grade) or animals (Feed grade). Most of the developing countries of the world are facing a major problem of malnutrition. Due to rapid growth in the population deficiency of protein and nutrients are seen in human food and as well as animal feed.  Single cell proteins have application in animal nutrition as: fattening calves, poultry, pigs and fish breading. In food it is used as : aroma carriers, vitamin carrier, emulsifying aids and to improve the nutritive value of baked products, in soups, in ready-to-serve-meals, in diet recipes and in the technical field in : paper processing, leather processing and as foam stabilizers.
 
It has been estimated that if necessary measures are not taken the malnutrition condition will lead to some major crisis in the developing countries. Therefore it is very important to increase protein production and also its availability to the population by utilizing all the available ways and also methods. The increased world demand for food and in particular feed protein spurred the search for non-conventional protein sources to supplement the available protein source. SCP production technologies arose as a promising way to solve the problem of worldwide protein shortage

Synthetic meat derived from fungus, Fusarium venenatum
Interest in microbial protein for animal fodder largely depends on production costs in relation to the prevailing price of the main market competitors, particularly soya protein and fishmeal. The reason that more microbial protein is not currently produced for fodder is due to the present low price of these conventional protein sources. However, this may change, as there have been forecasts of future shortages of soya and fishmeal.

Dietary supplement derived from algae
Rapid developments in microbial protein occured during the 1960s and 1970s. Extensive research was conducted on a wide range of microorganisms as possible alternate protein sources, motivated by large increases in the price of conventional animal feed.  SCP is not pure protein, but refers to the whole cells of bacteria, yeasts, filamentous fungi, or algae. SCP also contains carbohydrates, lipids, nucleic acids, mineral salts and vitamins. The composition depends upon the organism and the substrate which it grows. If SCP is to be used successfully, there are five main criteria to be satisfied:

1. The SCP must be safe to eat.
2. The nutritional value dependent on the amino acid composition must be high.
3. It must be acceptable to the general public.
4. It must have the functionality, i.e. characteristics, which are found in common staple foods.
5. The economic viability of the SCP process

Microbe
Protein (%)
Nucleic acid (%)
Bacteria
50.85
10-16
Yeast
45.55
5-12
Filamentous fungi
30.55
3-10
Algae
45.65
4-6


Table shows Essential amino acid content of the cell protein in comparison with several reference proteins (grams of amino acid per 100 grams of protein)


References
Israelidis, C. (n.d.). NUTRITION - SINGLE CELL PROTEIN, TWENTY YEARS LATER. Retrieved March 7, 2011, from http://www.biopolitics.gr/HTML/PUBS/VOL1/isreali.htm.

Srivastava, M.L., (2008), Fermentation Technology, Alpha Science International, Oxford


Trehan, K., (1990), Biotechnology, New Age International, New Delhi

By : Adrian & Kishan

26 comments:

  1. Good effort. I have some questions;
    1. How much (in RM) does the Quorn sausages cost compared to, say, Farm's Best brand.
    2. Have you tried this SCP yourself? Frankly, I don't really see such brands in local supermarkets.
    3. Would you consider these foods as "suitable for vegetarians"
    4. What do you think is the impact of waste from the production of SCP, and how to handle this?
    5. In your opinion, would there be any allergen problems or immune response effects, as some of the SCP organisms are closely-related to some pathogenic organisms, and may have similar antigens?

    -Crystale-

    ReplyDelete
    Replies
    1. If you work HARD for your money (and I know you do) you don’t like to see it wasted, right?

      There’s no shortage of ways to waste your money that I am sure you are already aware of but the ONE area most people don’t realize they are wasting their money is in the food they eat.

      That’s right.

      Are you 100% certain that your body is making the most of all the food and more importantly protein you consume each day?

      Wouldn’t you want to have confirmation on this?

      There are many indicators that your body will use to tell you if the foods you are eating is being wasted or not.

      You can read up more on this topic on the following page:

      ? Make sure you are ABSORBING the foods you eat, ok?

      Protein isn’t cheap whether it’s coming from food or shakes.

      But, did you know that every day you don’t consume a very specific type of enzyme, you are actually wasting money on the protein you’re buying from food and shakes?

      No protein means no growth PERIOD

      ? How to ABSORB all your protein and stop wasting money

      Even if you are doing everything right…

      Eating clean? CHECK!

      Eating organic? CHECK!

      5-6 meals a day? DOUBLE CHECK!

      Protein shakes, vitamins and supplement minerals? CHECK MATE!

      But one of the harsh realities I’ve learned from peak performance expert Wade Lightheart is this:

      Most of the protein individuals consume ends up in one of two places.

      One is your toilet bowl.

      And the second place is in a nice layer of sludge somewhere in your digestive tract.

      So in theory, it’s a nice idea to think that if you are following the “Golden Rules” that have been laid out for you, you are on the right track.

      BUT if you can’t properly utilize those foods, all that effort adds up to one GIANT-SIZED WASTE OF MONEY AND EFFORT.

      So what’s happening and why isn’t this being talked about so much?

      The industry is SLOWLY starting to realize this harsh truth but they are still WAY behind and struggling to catch up.

      Fact is, our bodies require ENZYMES to perform at their best.

      Enzymes are responsible for everything from “thinking to blinking” which also includes energy production, cell repair and recovery and even immune boosting advantages.

      The BAD NEWS is that our bodies only have a limited enzyme-producing capacity which naturally declines as we age (your enzyme potential can drop to only 30% by the time you reach the age of 40).

      And yes, our bodies CAN produce enzymes and yes there are enzymes in the foods you eat BUT they still don’t add up to the required amount you actually need.

      This is due to many contributing factors including HOW our foods are grown or produced these days, HOW they are transported and HOW we prepare those foods.

      And research demonstrates that ANY FOOD HEATED ABOVE 114 DEGREES FAHRENHEIT LOSES ALL OF ITS ENZYMES.

      In other words, all cooked food is deficient in digestive enzymes, leaving very little to break down your food.

      ? Yes I’d like to know more about restoring enzyme production

      PS. Before rushing out the door to go and get digestive enzymes from your local stores, remember this…

      Learn more about this formulation

      ? MassZymes digestive enzymes

      Delete
  2. Thank you for the questions, here's our answer:

    1. Generally, Quorn sausages are more expensive than conventional protein. The price range of Quorn products are from £1.67 (RM. 7.20) - £1.98 (RM. 9.00) in 250g, while Farm's Best sausages (340g) in malaysia (RM2.40).

    2. SCP is not limited to synthetic meat only, but also includes supplements such as spirulina, which can be bought in local stores. Another use of SCP is for animal fodder. As for spirulina tablet, some of us have tried it and just tastes like regular supplement tablet.

    3. Again, SCP includes a variety of products, some products (such as Quorn sausages) may contain eggs and milk which are not suitable for certain group of vegans. Generally, the SCP itself is considered as suitable for vegan and in fact, SCP foods are approved by Vegetarian Society.

    4. SCP itself is produced using the wastes from industrial processes, these microorganisms helps in industrial waste treatment by processing the toxic waste into safer compounds. So, the waste from SCP production is considered safe.

    5. Yes, some source of SCP may cause allergy reaction. For example : Quorn products are made from a mold, so people who are allergic to molds and penicillin (as this drug also produced from molds) may have an allergic reaction prior eating Quorn products.
    However, another source of SCP like algae does not cause allergic reaction as much as molds.

    ReplyDelete
  3. Thank you for the very nice blog about SCP. I was really wondering if there is SCP industry in the UK or Europe that provides sort of training about SCP production etc. I am thinking to develop this product in my country as I am researching on cassava and willing to utilise cassava waste to produce SCP. Thank you

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  10. Important topic and Excellent explanation with reference. This blog is very useful to understanding the non-conventional food from microbes . I like it .

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  11. Are all SCP safe for human consumption, if not what are the precautions needed while doing downstream processing or generating final product?

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