1、Optimization of enzymatic hydrolysis of Alaska pollock frame for preparing protein hydrolysates with low

The optimum hydrolysis conditions using MEAP were determined as follows: temperature 45 °C, hydrolysis time 300 min, enzyme to substrate ratio (E/S) of 1.2 g/100 g, liquid-solid ratio 6:1, and initial pH 8.0.

2、Production of fish protein hydrolysates step by step: technological aspects, equipment used, major energy costs and methods of their minimizing

Liquid FPH is a watering mixture of hydrolyzed proteins, which contains up to 90% of moisture. FPH in a liquid form is highly unstable for a long-term storage and, moreover, it is difficult to be transported. Thus, dried FPH is preferable due to a longer shelf-life, easier storage and transportation.

3、A Study of the Enzymatic Hydrolysis of Fish Frames Using Model Systems

Almost complete protein solubilisation (75 g soluble protein per kg hydrolysis solution) could be achieved within an hour, at 40 ̊C, at 1% enzyme/substrate ratio (w/w) with papain and bromelain. The pH-stat was found capable of continuously following the rate of hydrolysis but only at low DH.

4、Functional and bioactive properties of fish protein hydolysates and peptides: A comprehensive review

High solubility decreases the water holding capacity of fish protein (dos Santos et al., 2011). Studies of different FPHs show that water holding capacity ranges from 2.47 to 6.60 ml/g (Foh et al., 2011, dos Santos et al., 2011, Taheri et al., 2013).

5、Fish protein isolate: Development of functional foods with nutraceutical ingredients

Therefore, as the protein molecules become more polar (charged), more water associates on and around the protein surface and proteins become water soluble. However, it is possible to adjust the pH of a protein solution so that the number of negative charges on the protein's surface is equal to the number of positive charges, and therefore, the ...

Optimal design of industrial scale continuous process for fractionation by membrane technologies of protein hydrolysate derived from fish wastes

The process including the water recovery and reuse stage was optimized to minimize the total amount of water to be recovered to maintain the protein total contents below the fixed limits.

Characteristics of freeze

The solubilisation can be accomplished by adding 5-10 volumes of water with alkali then added to obtain a pH of approximately 10.5 or higher or by adding acid to bring the pH below 3 (Hultin et al. 2005). The mixture is then centrifuged. This allows the light oil fraction to rise to the top of the suspension.

Fish Protein Concentrate (Hydrolysed)

Hydrolysed fish protein concentrate (HFPC) is produced from by-products of the fishery industry. It is a feed ingredient of the new generation of feedstuffs, characterised by its extraordinarily high protein content and the conversion of insoluble fish protein into polypeptides and amino acids by enzymatic hydrolysis.

Kinetic Parameter Determination for Enzyme Hydrolysis of Fish Protein Residue Using D

Degree of hydrolysis (h) over time (t) for six different sets of initial conditions of salmon fish protein and Alcalase enzyme concentration, showing experimental points obtained from a traditional design of experiments (all points) and from a D-optimal design of experiments (black points with drop lines).

Protein, lipid and energy requirements of cultured marine fish in cold, temperate and warm water

Under optimal temperatures, food energy partitioned into fish growth can be maximized. However, when a marine carnivorous species is cultured in an environment where temperature falls outside the optimal range of a fish, growth will be affected.

Fish protein, derived from fish, is commonly used in food and feed. The dilution ratio of fish protein depends on various factors, including its concentration, the desired final concentration, and the total amount of water. Below are some recommendations for diluting fish protein:

1. Determine the Concentration of Fish Protein

First, check the specific concentration of the fish protein you purchased. Typically, fish protein concentrations range between 30% and 50%. For example, if the concentration is 40%, this means 40 grams of protein are present in every 100 grams of fish protein.

2. Identify the Desired Fish Protein Concentration

Determine the target concentration of fish protein you need. If you require a 10% fish protein concentration, you would dilute 10 grams of fish protein into 100 grams of water.

3. Calculate the Required Amount of Fish Protein

Suppose you have 100 grams of fish protein and want to dilute it to a 10% concentration. You would need to add 900 grams of water to dilute the 100 grams of fish protein. Thus, 900 grams of water should be added.

4. Account for the Volume of Fish Protein

The volume of fish protein may affect the final dilution ratio. For instance, if your fish protein is packaged in a 50-gram bottle, you might need to use more water to achieve proper dilution. In such cases, additional water beyond 900 grams may be required.

5. Consider the Total Water Volume

Ensure that the total water volume is sufficient for dilution. For example, if you have a fish tank or pond containing 1,000 liters of water, you might need to dilute the fish protein to approximately 1% concentration. In this case, 998 liters of water should be added.

6. Maintain Stability of Fish Protein

Fish protein may lose stability after dilution, so stabilizers might be needed to preserve its concentration.

7. Adjust Based on Application Method

Fish protein can be used in various forms, such as a feed additive, incorporated into food, or directly added to water. Each method may influence the required concentration. For example, if using fish protein as a feed additive, consider its stability and solubility in water.

8. Source of Fish Protein Matters

Fish protein from different sources may vary in concentration and quality. Choosing high-quality fish protein improves results.

9. Purpose-Driven Concentration

If fish protein is intended for specific uses (e.g., water quality improvement), adjust the concentration accordingly.

10. Experiment and Fine-Tune

In practice, finding the optimal dilution ratio may require experimentation. Test different ratios, observe outcomes, and adjust as needed.

the dilution ratio of fish protein depends on multiple factors, including its concentration, target concentration, total water volume, and stability. Practical adjustments may be necessary based on specific circumstances.