Poultry By-products as a potential source of nutrients

Minna Vikman (Corresponding Author), Virpi Siipola, Heimo Kanerva, Rasa Slizyte, Hanne Wikberg

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Large amounts of bones and trimmings are generated as a by-product of the poultry industry in mechanical deboning of chicken. These by-products are potential sources of valuable components such as proteins and nutrients. Enzymatic hydrolysis of animal by-products can be used to separate lipids and produce protein hydrolyzates resulting in the formation of insoluble sediment rich in phosphorus and nitrogen. In this study, the sediment from the enzymatic hydrolysis of by-product from mechanical deboning of chicken is hydrothermally treated to evaluate the possibility for nutrient recycling. Hydrothermal processing was performed at elevated temperature of 150°C and 220°C using water as the reaction medium with varying pH and time. The elemental composition of the liquid and solid fractions was measured after the treatments. With higher pH, the majority of phosphorus was distributed to the solid fraction while with pH 1 the majority of phosphorus was found in the liquid fraction. Nitrogen was concentrated in the liquid fraction in all processing conditions. The major part of the carbon was distributed to the liquid fraction.
Original languageEnglish
Pages (from-to)1 - 5
JournalAdvances in Recycling and Waste Management
Volume2
Issue number3
DOIs
Publication statusPublished - 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

poultry
boning
liquids
nutrients
enzymatic hydrolysis
phosphorus
byproducts
chickens
sediments
poultry industry
nitrogen
recycling
proteins
bones
carbon
lipids
animals
temperature
water

Keywords

  • hydrothermal treatment
  • poultry
  • chicken
  • nutrient
  • phosphorus
  • nitrogen

Cite this

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title = "Poultry By-products as a potential source of nutrients",
abstract = "Large amounts of bones and trimmings are generated as a by-product of the poultry industry in mechanical deboning of chicken. These by-products are potential sources of valuable components such as proteins and nutrients. Enzymatic hydrolysis of animal by-products can be used to separate lipids and produce protein hydrolyzates resulting in the formation of insoluble sediment rich in phosphorus and nitrogen. In this study, the sediment from the enzymatic hydrolysis of by-product from mechanical deboning of chicken is hydrothermally treated to evaluate the possibility for nutrient recycling. Hydrothermal processing was performed at elevated temperature of 150°C and 220°C using water as the reaction medium with varying pH and time. The elemental composition of the liquid and solid fractions was measured after the treatments. With higher pH, the majority of phosphorus was distributed to the solid fraction while with pH 1 the majority of phosphorus was found in the liquid fraction. Nitrogen was concentrated in the liquid fraction in all processing conditions. The major part of the carbon was distributed to the liquid fraction.",
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Poultry By-products as a potential source of nutrients. / Vikman, Minna (Corresponding Author); Siipola, Virpi; Kanerva, Heimo; Slizyte, Rasa; Wikberg, Hanne.

In: Advances in Recycling and Waste Management, Vol. 2, No. 3, 2017, p. 1 - 5.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Poultry By-products as a potential source of nutrients

AU - Vikman, Minna

AU - Siipola, Virpi

AU - Kanerva, Heimo

AU - Slizyte, Rasa

AU - Wikberg, Hanne

PY - 2017

Y1 - 2017

N2 - Large amounts of bones and trimmings are generated as a by-product of the poultry industry in mechanical deboning of chicken. These by-products are potential sources of valuable components such as proteins and nutrients. Enzymatic hydrolysis of animal by-products can be used to separate lipids and produce protein hydrolyzates resulting in the formation of insoluble sediment rich in phosphorus and nitrogen. In this study, the sediment from the enzymatic hydrolysis of by-product from mechanical deboning of chicken is hydrothermally treated to evaluate the possibility for nutrient recycling. Hydrothermal processing was performed at elevated temperature of 150°C and 220°C using water as the reaction medium with varying pH and time. The elemental composition of the liquid and solid fractions was measured after the treatments. With higher pH, the majority of phosphorus was distributed to the solid fraction while with pH 1 the majority of phosphorus was found in the liquid fraction. Nitrogen was concentrated in the liquid fraction in all processing conditions. The major part of the carbon was distributed to the liquid fraction.

AB - Large amounts of bones and trimmings are generated as a by-product of the poultry industry in mechanical deboning of chicken. These by-products are potential sources of valuable components such as proteins and nutrients. Enzymatic hydrolysis of animal by-products can be used to separate lipids and produce protein hydrolyzates resulting in the formation of insoluble sediment rich in phosphorus and nitrogen. In this study, the sediment from the enzymatic hydrolysis of by-product from mechanical deboning of chicken is hydrothermally treated to evaluate the possibility for nutrient recycling. Hydrothermal processing was performed at elevated temperature of 150°C and 220°C using water as the reaction medium with varying pH and time. The elemental composition of the liquid and solid fractions was measured after the treatments. With higher pH, the majority of phosphorus was distributed to the solid fraction while with pH 1 the majority of phosphorus was found in the liquid fraction. Nitrogen was concentrated in the liquid fraction in all processing conditions. The major part of the carbon was distributed to the liquid fraction.

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KW - nitrogen

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