THE MOST FOUND QUESTIONS ON X-FOS USAGE

1. What is the usage ratio of X-FOS compare to Polyphosphate?
2. Why do we have to use X-FOS to substitute to Polyphosphate?
3. Is X-FOS safe for human consumption?
4. If we use X-FOS, how we will declare in the packaging label?
5. Ref question 4, when we use X-FOS and we don’t declare in the packaging label, are there any methods to check and find out X-FOS ?
6. STPP from China cheaper than X-FOS, why do we change to X-FOS?
7. If we use more dosage and more dipping time like overnight soaking, will it be deteriorate the raw shrimp meat?
8. Is it possible that the shrimp importer or buyer will not allow using X-FOS in case of they know we are using X-FOS?
9. In the near future, will the phosphate-free additive be substituted to Polyphosphate in seafood processing industrial?
10. What is your suggested dosage and dipping time for the maximum yield with less effect on shrimp quality?
11. What is the main caution which we should be careful on using X-FOS?
12. Can X-FOS to be used together with Polyphosphate?
13. Are there any Phosphate-free additive same as X-FOS? and what is their difference?
14. Is there any other benefit in case of using X-FOS?

1. What is the usage ratio of X-FOS compare to Polyphosphate?

You could use the same usage ratio of X-FOS as polyphosphate which you are regularly using in your normal production. The yield result will be the same as polyphosphate (at the same ratio and the same dipping time)

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2. Why do we have to use X-FOS to substitute to Polyphosphate?

As you may realize the better benefit of X-FOS over than Polyphosphate from our comparative table. As we could summarize for your better clear understanding as 2 major considered topics:

• Higher yield than Polyphosphate by increasing usage ratio and prolong the
  dipping time by free feel about P₂O₅ residue over than customer limitation.
• Not only providing the higher yield but also preserving the natural texture
  color and appearance (Polyphosphate made shrimp meat into glassy appearance)

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3. Is X-FOS safe for human consumption?

All of X-FOS ingredients are high safe food additive (citric acid, sodium bicarbonate
and sodium chloride), so it is very safe for human consumption.

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4. If we use X-FOS, how we will declare in the packaging label?

As usual, you don’t need to declare ANY in the packaging label only SHRIMP and SALT. Not like polyphosphate, when you are using polyphosphate, you should declare: Shrimp, Salt and Polyphosphate

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5. Ref question 4, when we use X-FOS and we don’t declare in the packaging label, are there any methods to check and find out X-FOS ?

It is very difficult to find out; due to Citric Acid is organic matter in which every life tissue must have; while Sodium Bicarbonate will appear only CO2 in which every life must have CO2. And it is also very difficult to find out NATURAL citric acid and ADD-IN citric acid; Not like polyphosphate, we could check Natural P₂O₅ and
P₂O₅ which had been added in.

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6. STPP from China cheaper than X-FOS, why do we change to X-FOS?

As we could say that the cost of additive is very small factor compared to the cost of raw shrimp (around less than 0.5% of shrimp meat cost). When you decide to change to X-FOS, you could not only get the increased yield more than 1% (by increased usage ratio and prolong dipping time) but also the texture-color-appearance is better than using Polyphosphate. Therefore, finally you will have more margin from higher yield, while your importer will be satisfied on better quality of finished product

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7. If we use more dosage and more dipping time like overnight soaking, will it be deteriorate the raw shrimp meat?

Actually, yes, it will be effected to the texture-color-appearance in case of overnight soaking and/or over-dosage like 6% or more, but the result will be much better than Polyphosphate; for example, for using 4% dosage at dipping time 4 hours, the Shrimp quality result will be the same as Polyphosphate 2% dosage at dipping time
2 hours.

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8. Is it possible that the shrimp importer or buyer will not allow using X-FOS in case of they know we are using X-FOS?

FYI, in controversial, Japanese shrimp importer/buyer do likely prefer Phosphate-free additive than Polyphosphate, because it is more safe for human consumption (since a part of our ingredients is Organic Additive) and the final product quality is better than Polyphosphate effect. On the other hands, for USA market, now we are under applying for USFDA approval.

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9. In the near future, will the phosphate-free additive be substituted to Polyphosphate in seafood processing industrial?

Yes, it become very clear that the phosphate-free additive (X-FOS) will be substituted to Polyphosphate in seafood processing industrial in very near future, since the phosphate-free provide many advantages than Polyphosphate.

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10. What is your suggested dosage and dipping time for the maximum yield with less effect on shrimp quality?

We suggest to use the dosage ratio about 4%-6% at 3-4 hours (dipping time) (which will be depended on size of shrimp meat) for the best result (both on yield and shrimp meat quality) and please feel free about over P₂O₅ residue (afraid that the shrimp buyer can check it out) since X-FOS has no any Phosphate ingredients.

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11. What is the main caution which we should be careful on using X-FOS?

Actually, the main caution which we should be careful is to keep the solution temperature low at between 5-7 Degree C. during dipping period. Anyhow, this caution should be applied same as Polyphosphate or other Phosphate-free additive brand, as to keep the freshness quality for all the dipping period.

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12. Can X-FOS to be used together with Polyphosphate?

Yes, X-FOS can be used together with Polyphosphate. Actually, when the factory would like to change from Polyphosphate to X-FOS, most of their people (factory staff) do reluctant to change their daily processing from
Polyphosphate to X-FOS and seeming that they feel un-confident in trying new additive, so they do decide to be gradually changed; for example, in case of they are using 6% solution concentration, they will use X-FOS 3% +
Polyphosphate 3% for their trial process. After a period of time, they will adjust to X-FOS 4% + Polyphosphate 2% and finally they can use X-FOS substituted 100% to their polyphosphate usage.

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13. Are there any Phosphate-free additive same as X-FOS? and what is their difference?

Yes, there are a few brands (Non-Phosphate) in the market. However, some brand is not real phosphate-free additive by having some portion of STPP, but declaring as Phosphate-free additive. Anyhow, concerning to real non-phosphate additive, there will not have any significant difference on treatment process and result, but only
on solution preparation process, some brand has to be used by whole bag (could not be portion used or split usage) which will cause some inconvenience in real usage.

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14. Is there any other benefit in case of using X-FOS?

Yes, X-FOS has not only above mentioned advantages over Polyphosphate, but also X-FOS does not provide the algae booming effect like Phosphate. So, our X-FOS will be more friendly environment than polyphosphate.

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