News & Press

New IFU method no. 86: quantification of total chlorophyll in pineapple juices, purees and conc.

Sat, 23 Jan 2021 14:19:39 GMT

New IFU method no. 86

General Information

The new method describes a spectrophotometric technique for the measurement of total chlorophyll, via the assessment of the levels of chlorophyll (a) and (b), in pineapple juices, purees and concentrates. The method is designed to detect the use of excessive levels of skin during juice production.

Access to IFU publications

Available to Corporate & Association members and subscribers to all publications by logging onto the IFU website. Individual publications can be purchased via the online store. Friend members (cat 2) have access to 3 publications per year.

IFU Best Practice Guidance #1 - Fruit Washing and Sanitation 2020

Wed, 7 Oct 2020 21:10:50 GMT

IFU Best Practice Guidance #1
Fruit Washing and Sanitation (2020)

This document hasbeen publishedand
is available viathe IFU website under the heading
Best Practice & e-learning

www.ifu-fruitjuice.com

General information.

A practical guideline for the correct handling, sorting and washing of fruits at the processing site to minimize fruit damage, reduce the risks of final product contamination, ensure product safety and quality.

This 2nd Edition includes the following updates: Chapter 3 integration with more information about Ozone and maximum level of chlorine-based solutions for water treatments and addition of the new Chapter 5.4, dealing with possible operating procedure for berries washing.

Access to IFU publications

Available to Corporate &Association members and subscribers to all publications by logging onto the IFU website. Individual publications can be purchased via the on line store. Friend members (cat 2) have access to 3publications per year.

New IFU Method. Titrimetric determination of vitamin C

Sat, 24 Aug 2019 10:07:25 GMT

New IFU Method of analysis #17 has been listed on the IFU website under Methods of Analysis and then Chemical Methods.

It is the Determination of the ascorbic acid content of juice products using titrimetric procedures.

Background.

There are many different approaches available to measure ascorbic acid (Vitamin C) in beverages (fruit juices and drinks) and this topic is reviewed in IFU recommendation No 5 which was published some years ago.

Although it would be recommended to use IFU 17a, which is an HPLC method, to measure this compound in fruit juices/purées and nectars, there are times that a quicker method is required. This compound can be estimated using a simple redox based titration, which is suitable for a juice QA/QC type environment. Here either iodine or dichlorophenol indophenol (DCPIP) can be used as a titrant. Both these materials (I₂ & DCPIP) will oxidise ascorbic acid, and the titration end point is detected by a noticeable colour change in the solution. The volume of titrant at this end point is then used to calculate the level of ascorbic acid in the sample.

New IFU Recommendation #16. Review of methods of analysis for pesticide residues.

Thu, 11 Jul 2019 11:07:53 GMT

General information.

The use of agrochemicals is central to most agricultural production. These materials are designed to control pests (weeds & insects etc) during production of agricultural products, including fruits and vegetables, to assist growers to have a productive yield by limiting losses. This recommendation provides information on how MRL's are set and a review of methodology including the of the “QuEChERS-method” (Quick, Easy, Cheap, Effective, Rugged, and Safe) which has revolutionised pesticide residue analysis.

This recommendation has been published and is available via the IFU website under Methods of Analysis to members eligible for access.