ISO 23058:2006

Name: ISO 23058:2006 — Milk and milk products — Ovine and caprine rennets — Determination of total milk-clotting activity
SKU: ISO 23058:2006
Price: 23400 RUB
Availability: InStock

Milk and milk products — Ovine and caprine rennets — Determination of total milk-clotting activity

Название (английский):

ISO 23058:2006

Milk and milk products — Ovine and caprine rennets — Determination of total milk-clotting activity

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 13
Дата публикации:: 19 сентября 2006 г.
Издание:: ISO IS 23058 edition 1 version 1
ICS:: 67.100.01

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Цена:23 400 ₽

Описание (английский):

ISO 23058|IDF 199:2006 specifies a method for the determination of the total milk-clotting activity of an ovine or caprine rennet, including rennet paste, containing only chymosin and pepsin as the active coagulating enzymes on a standard milk substrate prepared using a calcium chloride solution of 0,5 g per litre (pH approx. 6,5).

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 23058:2006 (IDF 199:2006) specifies a laboratory method for determining the total milk‑clotting activity of ovine (sheep) and caprine (goat) rennets - including liquid rennets, powdered rennets and rennet paste. The method measures clotting time on a standard milk substrate prepared with calcium chloride (0.5 g/L, pH ≈ 6.5) and reports activity relative to international bovine reference standards in International Milk‑Clotting Units (IMCU). ISO 23058:2006 is intended for producers, control laboratories and research groups who need reproducible measures of milk‑clotting activity for cheesemaking quality control, product specification and regulatory compliance.

Key topics and requirements

Principle: Determine the time to visual flocculation of the standard milk substrate and compare to a bovine reference standard with defined enzyme composition (75% calf chymosin : 25% bovine pepsin).

Reference standards: Use calf and adult bovine rennet reference powders (primary standards, ~1 000 IMCU/g indicated on certificates) for calibration and relative measurement.

Substrate and reagents: Standard milk substrate prepared using CaCl2 working solution (0.5 g/L); use low‑heat, low‑fat spray‑dried milk powders of suitable renneting quality.

Sample forms: Procedures for preparing liquid, paste and powdered ovine/caprine rennet test solutions are specified.

Apparatus & precision: Requires precision pipettes, calibrated thermometers and pH meters; the standard includes precision information from interlaboratory trials (repeatability and reproducibility).

Calculation & expression: Results expressed relative to the reference powders and reported in IMCU; procedures for preparing reference working solutions and test dilutions are defined.

Storage & handling: Reference powders stored protected from moisture and light at −18 °C (short transport at ambient temperature permitted).

Applications and users

Dairy product manufacturers and cheesemakers assessing coagulant strength for recipe formulation and process control.

Rennet producers and suppliers validating product potency and labelling.

Quality control and regulatory laboratories performing standardized comparison of ovine and caprine rennets.

Research institutions studying enzyme activity, cheesemaking performance, or developing new coagulants.

Related standards

ISO 11815 / IDF 157 - Relative milk‑clotting activity test (REMCAT) for bovine rennets (method compatibility).

IDF 110B - Determination of chymosin and bovine pepsin contents (chromatographic method).

Laboratory glassware and equipment standards referenced (e.g., ISO 648, ISO 1042) for pipettes and volumetric flasks.

Keywords: ISO 23058:2006, ovine rennet, caprine rennet, milk‑clotting activity, IMCU, calcium chloride, rennet paste, chymosin, pepsin, REMCAT, cheesemaking.

ISO 23058:2006

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

Технические детали

ISO 11815:2007

Milk — Determination of total milk-clotting activity of bovine rennets

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