EP1204328A1 - Concentre proteique de lactoserum a faible teneur en graisse et procede de preparation - Google Patents

Concentre proteique de lactoserum a faible teneur en graisse et procede de preparation

Info

Publication number
EP1204328A1
EP1204328A1 EP00950114A EP00950114A EP1204328A1 EP 1204328 A1 EP1204328 A1 EP 1204328A1 EP 00950114 A EP00950114 A EP 00950114A EP 00950114 A EP00950114 A EP 00950114A EP 1204328 A1 EP1204328 A1 EP 1204328A1
Authority
EP
European Patent Office
Prior art keywords
wpc
whey
reduced fat
acid
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00950114A
Other languages
German (de)
English (en)
Other versions
EP1204328A4 (fr
Inventor
Robert Philip Boswell
Joanne Campbell Hutchinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
New Zealand Co-Operative Dairy Co Ltd
Original Assignee
New Zealand Co-Operative Dairy Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by New Zealand Co-Operative Dairy Co Ltd filed Critical New Zealand Co-Operative Dairy Co Ltd
Publication of EP1204328A1 publication Critical patent/EP1204328A1/fr
Publication of EP1204328A4 publication Critical patent/EP1204328A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
    • A23C9/00—Milk preparations; Milk powder or milk powder preparations
    • A23C9/14—Milk preparations; Milk powder or milk powder preparations in which the chemical composition of the milk is modified by non-chemical treatment
    • A23C9/142—Milk preparations; Milk powder or milk powder preparations in which the chemical composition of the milk is modified by non-chemical treatment by dialysis, reverse osmosis or ultrafiltration
    • A23C9/1425—Milk preparations; Milk powder or milk powder preparations in which the chemical composition of the milk is modified by non-chemical treatment by dialysis, reverse osmosis or ultrafiltration by ultrafiltration, microfiltration or diafiltration of whey, e.g. treatment of the UF permeate
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23J—PROTEIN COMPOSITIONS FOR FOODSTUFFS; WORKING-UP PROTEINS FOR FOODSTUFFS; PHOSPHATIDE COMPOSITIONS FOR FOODSTUFFS
    • A23J1/00—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites
    • A23J1/20—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from milk, e.g. casein; from whey
    • A23J1/205—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from milk, e.g. casein; from whey from whey, e.g. lactalbumine
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23J—PROTEIN COMPOSITIONS FOR FOODSTUFFS; WORKING-UP PROTEINS FOR FOODSTUFFS; PHOSPHATIDE COMPOSITIONS FOR FOODSTUFFS
    • A23J3/00—Working-up of proteins for foodstuffs
    • A23J3/04—Animal proteins
    • A23J3/08—Dairy proteins

Definitions

  • This invention relates to reduced fat whey protein concentrate (WPC) and a method of producing such a product, preferably, although not exclusively, from a sweet whey.
  • WPC reduced fat whey protein concentrate
  • WPC Whey Protein Concentrates
  • WPI Whey Protein Isolates
  • WPC have many different uses. Those uses may broadly be divided into two categories, one being nutritional- based uses and the second being functional-based uses.
  • the nutritional-based uses would include, for example, infant formulae, enteral formulae, and sports drinks.
  • the functional-based uses include, for example, for gelling, whipping, emulsification and other valuable properties for baking products.
  • Functionality has been defined by Pour-El, A. ( 1 981 , "Protein Functionality: classification, definition, and methodology", Protein Functionality in Foods, USA) as 'any property of a food or food ingredient except its nutritional ones that affect its utilisation'.
  • Functional properties of a protein ingredient are influenced by the composition of the ingredient, the composition of the food system it is to be used in, and by the processing conditions required to manufacture this food system.
  • the majority of functional characteristics of ingredients can be categorised into hydration related (dispersibility, solubility, swelling, viscosity, gelation) and surface related (emulsification, foaming, adsorption at air-water and oil- water interfaces) properties.
  • WPC is derived from whey which is the by-product of either acid (mineral acid or lactic whey) or sweet (cheese or rennet whey) coagulation of milk protein from milk in the manufacture of cheese or casein.
  • acid mineral acid or lactic whey
  • sweet cheese or rennet whey
  • the standard methods for producing WPC from acid or sweet whey are well known and are discussed, for example in United States patent specification US 4,200,662.
  • Acidification of milk to a pH of about 4.6 causes casein to become insolubilised and to coagulate as in, for example, casein (mineral acid casein or lactic casein) or certain cheese types (cottage cheese).
  • casein mineral acid casein or lactic casein
  • cheese curd is known as acid whey.
  • the alternative method of producing whey is by the addition of rennin and/or pepsin, proteolytic enzymes, to cause coagulation of casein.
  • the resulting whey, after removal of the coagulated casein is known as sweet or cheese whey.
  • WPC has a lower functional performance than WPI.
  • acid WPC has a superior functionality as compared to WPI.
  • cheese WPC has an inferior functional performance as compared to acid WPC. This is thought to be due to the difference in fat content, where cheese WPC typically has a higher fat content as compared to acid WPC.
  • Cheese WPC has a lower market value than acid WPC and WPI.
  • An improvement in functionality is expected to increase the market returns for cheese WPC.
  • improved functional characteristics may also be achieved for acid WPC if the fat content could be reduced to a level similar to that for WPI.
  • a method for producing a WPC having a fat content of no greater than 4%, from whey including the steps of:
  • One preferred form of the process of the invention may further include controlling the temperature of the diluted intermediate WPC prior to pH adjustment.
  • the temperature may be increased to substantially 50°C. Alternatively, it may be reduced to substantially 1 0°C.
  • the pH may be adjusted to substantially 4.2 to 4.4.
  • the pH may be adjusted by the addition of a mineral or organic acid, preferably citric acid.
  • a mineral or organic acid preferably citric acid.
  • the temperature may be increased to substantially 50°C and the removal of floe may be by a clarifier.
  • the whey may be concentrated to a solids concentration in the range substantially 1 2 to 30% total solids, more preferably > 1 8% and in one preferred form substantially 23% .
  • the solids concentration may involve ultrafiltration.
  • the intermediate WPC may be diluted with water at a ratio in the range substantially 1 :3 to 1 :20, retentate:water.
  • the intermediate WPC having a solids content of > 1 8% total solids may be diluted in the ratio substantially one part retentate to nine parts water.
  • that water is demineralised water.
  • the starting whey for use in the process of the invention is sweet whey.
  • the process of the invention may include further processing of the reduced fat WPC supernatant to concentrate the solids content and thereafter prepare a dry powder product by conventional means.
  • a WPC derived from a sweet whey having functional characteristics at least equivalent to those of a WPC derived from acid whey by conventional means.
  • a WPC derived from acid or sweet whey having functional characteristics substantially equivalent to those of a conventional WPI.
  • Figure 1 is a flow diagram of the general features of the process of the invention, in one preferred form;
  • Figure 2 is a flow diagram of one specific embodiment of the invention.
  • the process of the invention is broadly identified in Figure 1 , and involves the processing of whey (preferably sweet whey) to produce a reduced fat WPC.
  • whey preferably sweet whey
  • the process in broad terms, involves concentrating the solids component of the whey, preferably by an ultrafiltration process, to produce an intermediate WPC with a solids content in the range 1 2% to 30% total solids.
  • the solids content is preferably > 1 8%, and 30% is a maximum practical content.
  • the intermediate WPC is then diluted with water to produce a WPC retentate with a lower ionic strength.
  • the dilution ratio will vary depending on the solids content of the intermediate WPC, but will be in the range 1 :3 to 1 :20, retentate:water.
  • a ratio of about 1 :9 is appropriate.
  • the pH of the diluted retentate is then adjusted to a selected level in the range 3.8 to 5.0, the diluted retentate is held under those conditions for a specified period during which a floe forms and the floe, which contains a high proportion of fat, is then separated to leave a low fat supernatant which can subsequently be processed to produce, for example, a dried, powder, reduced fat WPC.
  • the end product has a reduced lactose content, as well as a reduced fat content, and this combination results in an increase in protein content.
  • the fat content may be reduced to 1 % or lower.
  • Conventional sweet WPC has a fat content of 6 to 7% and conventional acid WPC has a fat content of generally above 4%.
  • reductions in fat content of a sweet WPC produced from the process of the invention to 4% or less provides at least functional equivalence to a conventional acid WPC product.
  • Reductions below 4% offer functional advantages which, as the fat content is reduced to 1 % or less, approach the functional performance of WPI. It will be appreciated, therefore, that the functional characteristics of an acid WPC may also be improved by the process of the invention.
  • Figure 2 summarises the process employed in a pilot plant trial.
  • Sweet whey was dosed with citric acid to reduce the pH to 6.00.
  • the whey was then thermalised by heating indirectly to 73°C and holding for 1 5 seconds, before cooling regeneratively to 55°C.
  • the thermalised sweet whey was stored prior to ultrafiltration (UF).
  • UF was used to increase the total solids (TS) (brix) of the whey from about 6% to 23 % using 1 3 loops of 1 0kD spiral wound membranes.
  • Diafiltration DF - the addition of demineralised water to allow a high concentration ratio to be used
  • the retentate was chilled to about 4°C, for microbial control, prior to storage.
  • 100 L of this sweet whey retentate (at 23% brix) was then diluted using 900 L of demineralised water at about 50°C; an approximate ratio of 1 0% retentate to 90% water.
  • This mixture having a preferred ionic strength for the process, was agitated to ensure a homogenous solution.
  • the dilute retentate was heated to 50°C using indirect heating.
  • the heated dilute retentate was then acidified.
  • Citric acid was dosed in-line, to reduce the pH from approximately 6.00 to approximately 4.30.
  • the solution was then held for about 1 5 minutes prior to clarification using a pilot clarifier (GEA-Westfa a model KNA3). This was run at 750 L/hr, 4-4.5 bar back pressure, with continuous discharge, and two 0.5mm nozzles to separate the floe from the supernatant.
  • the supernatant was then heated to 50°C prior to UF through 5kD spiral wound membranes.
  • This second UF step concentrated the product to about 20% TS (brix).
  • the volume concentration fraction (VCF) used was approximately 1 0. No diafiltration water was added.
  • the retentate was then pH adjusted to about 6.8 (to give a pH in the final powder of 6.8 - 7.0) using a mix of KOH and NaOH prior to spray drying.
  • the process described in the example includes the step of heating the diluted WPC retentate to about 50°C
  • the optimum temperature for the process will depend on a number of variables, including the holding time and the method of separation used.
  • the process may, for example, involve chilling of the diluted WPC retentate to about 1 0°C prior to acidification, rather than heating, where the separation method is other than by clarification.
  • Table 1 provides compositional data for product manufactured using the process of the invention in a pilot plant.
  • the table shows that the by-product floe has a fat content of about 1 3% .
  • the dried WPC end-product has a protein content of about 87% and a fat content of only 1 % .
  • Table 2 illustrates the solubility of each sample over a range of pH's.
  • the pilot plant sample had a much greater degree of solubility than that of an acid WPC. This is shown by the narrow pH range over which sediment formed, and also by the small amount of sediment which formed in comparison to the Acid WPC.
  • Viscosity is a measure of rheological properties and is important in applications for example, sauces, gravies and salad dressings.
  • the viscosity characteristic for the pilot plant sample is equivalent to acid WPC.
  • Foaming is important for applications such as, for example, cakes and meringues.
  • Table 3 shows that the pilot plant sample has a maximum overrun greater than that of the target product for the application (WPI) in the foaming system without sugar. In both systems, the pilot plant sample has greater foam stability than WPI.
  • Gelation is a functional characteristic important in systems, for example, yoghurts and restructured meats.
  • Table 4 illustrates the similarity between the pilot plant sample and Acid WPC (target product) in 0% NaCI gels. No data was available for comparison in 0.4% NaCI systems, and it can be seen that the pilot plant sample does not perform as well overall in the 2 % NaCI system. Table 4. Functional results for a pilot plant sample and Acid WPC in gelation test systems.
  • Sediment is undesirable and was observed in the pilot plant sample only at pH 4.0 ( 14.5 ml sediment), compared to the WPI which had 2ml sediment at pH 4.0 and 1 ml sediment at pH 3.8.
  • Table 5 shows the similarity between the pilot plant sample and acid
  • Peak 1 - represents elasticity / b ⁇ ttleness
  • the process of the present invention enables the processing of a whey (preferably a sweet whey) in a manner which produces a readily removable floe containing a substantial portion of the fat, leaving a WPC end-product having a high protein and reduced fat content, and with improved functional performance.
  • the resulting product when derived from a sweet whey may have a functional performance at least equivalent to that of a conventional acid WPC, and a similar composition.
  • a WPC product, whether derived from sweet or acid whey may be produced with functional performance substantially equivalent to that of a WPI

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Biochemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Zoology (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Dairy Products (AREA)

Abstract

La présente invention concerne un concentré protéique de lactosérum (whey protein concentrate / WPC) à faible teneur en graisse et son procédé de production. Le procédé de l'invention fait intervenir les étapes suivantes: concentration de la partie solide du lactosérum pour produire un WPC intermédiaire; dilution du WPC intermédiaire dans de l'eau pour obtenir une force ionique inférieure ou égale à une force ionique présélectionnée; réglage du pH du WPC intermédiaire dilué pour qu'il soit compris entre 3,8 et 5,0; maintien du pH à cette valeur pour une durée permettant d'optimiser la formation de floculat; et élimination du floculat pour que ne subsiste qu'un surnageant de WPC à faible teneur en graisse. Le WPC ainsi obtenu a une teneur en graisse ≤ 4 % et de préférence ≤ 1 %. Le procédé trouve des applications en particulier pour la production de WPC à faible teneur en graisse à partir de lactosérum doux présentant des propriétés fonctionnelles similaires à celles d'un WPC classique dérivé du lactosérum acide. De plus, le procédé peut être utilisé pour la production de WPC à faible teneur en graisse à partir de lactosérum acide ou doux ayant des propriétés fonctionnelles et une composition similaires à celles d'un isolat protéique de lactosérum (whey protein isolate / WPI).
EP00950114A 1999-07-29 2000-07-27 Concentre proteique de lactoserum a faible teneur en graisse et procede de preparation Withdrawn EP1204328A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NZ33697399 1999-07-29
NZ33697399 1999-07-29
PCT/NZ2000/000140 WO2001008502A1 (fr) 1999-07-29 2000-07-27 Concentre proteique de lactoserum a faible teneur en graisse et procede de preparation

Publications (2)

Publication Number Publication Date
EP1204328A1 true EP1204328A1 (fr) 2002-05-15
EP1204328A4 EP1204328A4 (fr) 2003-03-12

Family

ID=19927409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00950114A Withdrawn EP1204328A4 (fr) 1999-07-29 2000-07-27 Concentre proteique de lactoserum a faible teneur en graisse et procede de preparation

Country Status (8)

Country Link
EP (1) EP1204328A4 (fr)
JP (1) JP2003505097A (fr)
AR (1) AR024983A1 (fr)
AU (1) AU773344B2 (fr)
CA (1) CA2379169A1 (fr)
HK (1) HK1047016A1 (fr)
UY (1) UY26262A1 (fr)
WO (1) WO2001008502A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7897186B2 (en) 2001-11-06 2011-03-01 Novozymes North America, Inc. Modified whey protein compositions having improved foaming properties
CA2563411C (fr) 2004-04-16 2013-01-15 Universite Laval Procede d'extraction de lipides a partir de solutions biologiques

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993020713A1 (fr) * 1992-04-22 1993-10-28 Bopa Ireland Limited Produits derives du lactoserum et leur utilisation dans les produits alimentaires
WO1997026797A1 (fr) * 1996-01-26 1997-07-31 John Stephen Ayers Procede pour separer et recuperer les proteines contenues dans une solution de proteines
WO2001041580A1 (fr) * 1999-12-08 2001-06-14 Fonterra Co-Operative Group Limited Methode permettant d'obtenir un produit appauvri en glyco-macro-peptide a partir de lactoserum

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0243544B1 (fr) * 1986-04-29 1989-04-05 Express Foods Group Limited Procédé de fabrication de protéines de lactosérum à faible teneur en graisse
DE3800468A1 (de) * 1988-01-11 1989-07-20 Westfalia Separator Ag Verfahren zur dephospholipidation von molke

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993020713A1 (fr) * 1992-04-22 1993-10-28 Bopa Ireland Limited Produits derives du lactoserum et leur utilisation dans les produits alimentaires
WO1997026797A1 (fr) * 1996-01-26 1997-07-31 John Stephen Ayers Procede pour separer et recuperer les proteines contenues dans une solution de proteines
WO2001041580A1 (fr) * 1999-12-08 2001-06-14 Fonterra Co-Operative Group Limited Methode permettant d'obtenir un produit appauvri en glyco-macro-peptide a partir de lactoserum

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO0108502A1 *

Also Published As

Publication number Publication date
AR024983A1 (es) 2002-11-06
CA2379169A1 (fr) 2001-02-08
UY26262A1 (es) 2000-10-31
JP2003505097A (ja) 2003-02-12
AU773344B2 (en) 2004-05-20
HK1047016A1 (zh) 2003-02-07
AU6326200A (en) 2001-02-19
EP1204328A4 (fr) 2003-03-12
WO2001008502A1 (fr) 2001-02-08

Similar Documents

Publication Publication Date Title
AU785073B2 (en) Milk protein products and processes
AU2003288836B2 (en) Dairy protein process and applications thereof
US4018752A (en) Ultrafiltration process for the recovery of proteins from milk
AU2006312074B2 (en) Purification of beta casein from milk
IE50403B1 (en) A method of preparing modified whey proteins
US4125527A (en) Process for the recovery of proteins
US11937619B2 (en) Pea albumins, method for obtaining same and applications thereof
RU2362315C2 (ru) Способ удаления привкуса у белка молочной сыворотки
WO2020011975A1 (fr) Procédé de production de fromage
AU773344B2 (en) Reduced fat whey protein concentrate and method of manufacture
EP0427307A2 (fr) Produits laitiers
US20030078392A1 (en) Milk and cheese modification process, including methods of extracting beta-lactoglobulin and caseins from milk and milk products, and novel products thereby produced
KR20240006521A (ko) 수용성 식물성 단백질, 이의 제조 방법, 및 이의 용도
NZ517527A (en) Reduced fat whey protein concentrate and method of manufacture
JP2024500497A (ja) クリームチーズの製造方法
EP0467482B1 (fr) Procédé de préparation d'un isolat de protéine de lait
Varnam et al. Dairy protein products
EP0967884B1 (fr) Procede de production de proteines du lait
Sachdeva et al. Production of chhana by ultrafiltration
US4525366A (en) Process for treating a milk serum product

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020227

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

A4 Supplementary search report drawn up and despatched

Effective date: 20030123

RIC1 Information provided on ipc code assigned before grant

Ipc: 7A 23C 21/00 A

Ipc: 7A 23C 1/00 B

Ipc: 7A 23J 1/20 B

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20031229