Fish hydrolysate

Last updated
Fish hydrolysates have been made into a dried product Fish-protein-powder-500x500 (1).jpg
Fish hydrolysates have been made into a dried product

Fish hydrolysate, in its simplest form, is ground up fish transformed into a liquid phase, where the cleavage of molecular bonds occurs through various biological processes. Raw material choice; either whole fish or by-products, depends on the commercial sources of the fish. In some cases, the fillet portions are removed for human consumption, the remaining fish body (generally the guts, bones, cartilage, scales and remaining meat) is put into water and ground up. Some fish hydrolysate is ground more finely than others so more bone material is able to remain suspended. Enzymes may also be used to dissolve bones, scale and meat. If the larger chunks of bone and scales are screened out, calcium or mineral content may be lacking in the finished product form. If purchasing fish hydrolysate for agricultural applications, one should look at the label carefully for the concentration of mineral elements in the liquid. Some fish hydrolysates have been made into a dried product, increasing the potential for inclusion as an ingredient in other food or feed products. The oil is separated out in this process, which means the Omega 3 fatty acid would remain with the oil and not the hydrolysate. [1]

Contents

Uses of fish hydrolysate

There are many uses of fish hydrolysate - from fish-based fertilizer, to its use as an animal food, or even for human consumption applications which are developing. A number of scientific journals have cited the antiproliferative activity of fish protein hydrolysate, which makes it eligible for listing as a nutriceutical. [2]

Bycatch

Hydrolysate process minces Blue Grass Chemical Agent-Destruction Pilot Plant Hydrolysate Storage Area (14792711554).jpg
Hydrolysate process minces

New technologies that have increased fishing efficiency have also resulted in the taking of species or sizes not suitable for market, known as bycatch. An increased catch of unsaleable whole fish has resulted from the increased bycatch of the fishing industry. These fish are often dumped overboard at sea, but are also brought into port in the holds of fishing boats. This has spurred an incentive to find a market for the bycatch in order to lower the cost of production.

Stabilizers

The liquid fish hydrolysate process minces the whole fish, then enzymatically digests, then grinds and liquifies the resulting product, known as gurry. Because it is a cold process, gurry putrefies more rapidly than fish emulsion and needs to be stabilized at a lower pH, requiring more acid. Researchers have tried formic acid, sulfuric acid, and others. Formic acid had phytotoxic effects on plants. Phosphoric acid is the preferred stabilizer. [3]

Comparison with fish emulsion

If fish hydrolysate is heated, the oils and certain proteins can be more easily removed to be sold in purified forms. The complex protein, carbohydrate and fats in the fish material are denatured, which means they are broken down into less complex foods. Overheating can result in destruction of the material as a food to grow beneficial organisms. Once the oils are removed and proteins denatured and simplified by the heating process, this material is called a fish emulsion. The hydrolysate process has substantially lower capital and production costs compared to fish emulsion production. [1]

Related Research Articles

<span class="mw-page-title-main">Cooking</span> Preparing food using heat

Cooking, also known as cookery or professionally as the culinary arts, is the art, science and craft of using heat to make food more palatable, digestible, nutritious, or safe. Cooking techniques and ingredients vary widely, from grilling food over an open fire, to using electric stoves, to baking in various types of ovens, reflecting local conditions. Cooking is an aspect of all human societies and a cultural universal.

An emulsion is a mixture of two or more liquids that are normally immiscible owing to liquid-liquid phase separation. Emulsions are part of a more general class of two-phase systems of matter called colloids. Although the terms colloid and emulsion are sometimes used interchangeably, emulsion should be used when both phases, dispersed and continuous, are liquids. In an emulsion, one liquid is dispersed in the other. Examples of emulsions include vinaigrettes, homogenized milk, liquid biomolecular condensates, and some cutting fluids for metal working.

<span class="mw-page-title-main">Gelatin</span> Mixture of peptides and proteins derived from connective tissues of animals

Gelatin or gelatine is a translucent, colorless, flavorless food ingredient, commonly derived from collagen taken from animal body parts. It is brittle when dry and rubbery when moist. It may also be referred to as hydrolyzed collagen, collagen hydrolysate, gelatine hydrolysate, hydrolyzed gelatine, and collagen peptides after it has undergone hydrolysis. It is commonly used as a gelling agent in food, beverages, medications, drug or vitamin capsules, photographic films, papers, and cosmetics.

<span class="mw-page-title-main">Margarine</span> Semi-solid oily spread often used as a butter substitute

Margarine is a spread used for flavoring, baking, and cooking. It is most often used as a substitute for butter. Although originally made from animal fats, most margarine consumed today is made from vegetable oil. The spread was originally named oleomargarine from Latin for oleum and Greek margarite. The name was later shortened to margarine.

<span class="mw-page-title-main">Whey</span> Liquid remaining after milk has been curdled and strained

Whey is the liquid remaining after milk has been curdled and strained. It is a byproduct of the manufacturing of cheese or casein and has several commercial uses. Sweet whey is a byproduct resulting from the manufacture of rennet types of hard cheese, like cheddar or Swiss cheese. Acid whey is a byproduct brought out during the making of acid types of dairy products, such as strained yogurt.

<span class="mw-page-title-main">Coconut oil</span> Edible oil derived from coconut

Coconut oil is an edible oil derived from the kernels, meat, and milk of the coconut palm fruit. Coconut oil is a white solid fat below around 25 °C (77 °F), and a clear thin liquid oil at higher temperatures. Unrefined varieties have a distinct coconut aroma. Coconut oil is used as a food oil, and in industrial applications for cosmetics and detergent production. The oil is rich in medium-chain fatty acids.

<span class="mw-page-title-main">Fishing industry</span> Economic branch

The fishing industry includes any industry or activity that takes, cultures, processes, preserves, stores, transports, markets or sells fish or fish products. It is defined by the Food and Agriculture Organization as including recreational, subsistence and commercial fishing, as well as the related harvesting, processing, and marketing sectors. The commercial activity is aimed at the delivery of fish and other seafood products for human consumption or as input factors in other industrial processes. The livelihood of over 500 million people in developing countries depends directly or indirectly on fisheries and aquaculture.

Biodiesel production is the process of producing the biofuel, biodiesel, through the chemical reactions of transesterification and esterification. This process renders a product (chemistry) and by-products.

<span class="mw-page-title-main">Whey protein</span> Protein supplement

Whey protein is a mixture of proteins isolated from whey, the liquid material created as a by-product of cheese production. The proteins consist of α-lactalbumin, β-lactoglobulin, serum albumin and immunoglobulins. Glycomacropeptide also makes up the third largest component but is not a protein. Whey protein is commonly marketed as a protein supplement, and various health claims have been attributed to it. A review published in 2010 in the European Food Safety Authority Journal concluded that the provided literature did not adequately support the proposed claims.

Fish emulsion is a fertilizer emulsion that is produced from the fluid remains of fish processed for fish oil and fish meal industrially.

Hydrolyzed vegetable protein (HVP) products are foodstuffs obtained by protein hydrolysis and are used as ingredients to create a bouillon (broth) taste without the vegetables, bones, simmering, or other standard elements of creating bouillon from scratch.

<span class="mw-page-title-main">Easy Cheese</span> Canned processed cheese product

Easy Cheese is the trademark for a processed cheese spread product distributed by Mondelēz International. It is also commonly referred to by generic terms such as "spray cheese", "squirt cheese", "cheese in a can", and/or "cheese cans". Easy Cheese is packaged in a metal can filled with air covered with a plastic cap that reveals a straight, flexible nozzle where the cheese is extruded.

<span class="mw-page-title-main">Soybean oil</span> Oil obtained from seeds of soya plant

Soybean oil is a vegetable oil extracted from the seeds of the soybean. It is one of the most widely consumed cooking oils and the second most consumed vegetable oil. As a drying oil, processed soybean oil is also used as a base for printing inks and oil paints.

<span class="mw-page-title-main">Fish meal</span> Commercial product made from fish to feed farm animals

Fish meal, sometimes spelt fishmeal, is a commercial product made from whole wild-caught fish, bycatch, and fish by-products to feed farm animals, e.g., pigs, poultry, and farmed fish. Because it is calorically dense and cheap to produce, fishmeal has played a critical role in the growth of factory farms and the number of farm animals it is possible to breed and feed.

<span class="mw-page-title-main">Fish factory</span> Facility where fish processing is performed

A fish factory, also known as a fish plant orfish processing facility, is a facility in which fish processing is performed. They are commonly located near bodies of water but can be located inland and on fishing vessels. The availability and variety of fish influences the scale of fish factories and the processing methods they utilize. The modernization of these facilities has promoted the use of machinery to increase production speed in order to meet the increasing global demand. Heightened demand has led to the increased production of fish and fish products which after processed result in large quantities of pollutants namely fish waste. Fish factories are held accountable for their product quality and are subject to a variety of health and safety regulations. Most regulations applicable to fish factories are limited, there are no universal regulations. Byproduct recovery is a method of waste mitigation that utilizes the waste produced by fish factories to produce other products and reduce the percentage of a fish's overall weight that becomes waste.

<span class="mw-page-title-main">Fish products</span> Food product produced from fish

Fish and fish products are consumed as food all over the world. With other seafoods, they provides the world's prime source of high-quality protein; 14–16 percent of the animal protein consumed worldwide. Over one billion people rely on fish as their primary source of animal protein.

<span class="mw-page-title-main">Commercial fish feed</span> Fish food manufactured commercially

Manufactured feeds are an important part of modern commercial aquaculture. They provide the balanced nutrition needed by farmed fish. The feeds, in the form of granules or pellets, give nutrition in a stable and concentrated form, enabling the fish to feed efficiently and grow to their full potential.

<span class="mw-page-title-main">Fish protein powder</span> Fish meal product for human consumption

Fish protein powder (FPP) describes a food grade powder product designated primarily for human consumption applications. It differs significantly from fish meal products which are designated for animal feed applications. Fish protein powders have various sanitary processing, purity and functional characteristics which establish them as human food ingredients. Production plants registered for the USA market are located in Peru and France.

<span class="mw-page-title-main">Vegetarian and vegan dog diet</span> Adequate meat-free or animal-free nutrition

As in the human practice of veganism, vegan dog foods are those formulated with the exclusion of ingredients that contain or were processed with any part of an animal, or any animal byproduct. Vegan dog food may incorporate the use of fruits, vegetables, cereals, legumes including soya, nuts, vegetable oils, as well as any other non-animal based foods.

<span class="mw-page-title-main">Fat hydrogenation</span> Addition of hydrogen atoms to fat molecules

Fat hydrogenation is the process of combining unsaturated fat with hydrogen in order to partially or completely convert it into saturated fat. Typically this hydrogenation is done with liquid vegetable oils resulting in solid or semi-solid fats.

References

  1. 1 2 Critical Reviews in Food Science and Nutrition, Volume 40, Issue 1 January 2000, pp. 43-81.
  2. Picot, L, et al., 'Antiproliferative activity of fish protein hydrolysates on human breast cancer cell lines', Process Biochemistry. Vol. 41, no. 5, May 2006.
  3. Brian Baker, Plant Nutrition from the Sea, Farmer to Farmer 16 (Sept./Oct. 1996), available online at Archived 2016-04-23 at the Wayback Machine .

Further reading