LS/T 3261-2019 in English

VALID

Sumac fruit oil

Issued on:2019-06-06
Implemented on:2019-12-06
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $100.00
$97.00

Standard No:	LS/T 3261-2019
Document status:	VALID
Title in English:	Sumac fruit oil
Title in Chinese:	盐肤木果油
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2019-06-06
Implemented on:	2019-12-06
ICS Classification:	67.200.10-Animal and vegetable fats and oils
Chinese Classification:	X14-Grease and oil processing and products
Professional Classification:	LS-Cereal
Related Topics:	Polypeptide Fruity Herbs ls/t 3245 Isshiki body oil

Introduction

Standard Overview and Technical Background

LS/T 3261-2019 is an industry standard for linseed oil issued by the State Administration of Grain and Material Reserves, replacing the original standard. This standard specifies the quality requirements, inspection methods and labeling specifications for linseed crude oil and finished linseed oil.

Analysis of Core Quality Indicators

Indicator Category	Crude Oil Requirements	Finished Oil Requirements	Test Method
Refractive Index(n20)	1.468-1.473	1.466-1.473	GB/T 5527
Iodine Value(I2)/(g/100g)	132-138	130-140	GB/T 5532
α-linolenic acid content	≥50.0%	≥48.0%	GB 5009.168

Key test method description

Fatty acid composition determination

According to GB 5009.168, gas chromatography is used, and the detection limit of C18:3 (α-linolenic acid) is required to reach 0.05%. The practice of a certain testing agency shows that the best separation effect can be obtained by using a DB-23 column (60m×0.25mm×0.25μm).

Peroxide value control

The peroxide value limit of finished oil is 7.0-25.0mmol/kg (GB/T 5534). It is recommended that production enterprises adopt nitrogen protection technology. A demonstration enterprise extended the shelf life of its products by 40% through nitrogen-filled packaging.

Key points for implementation of the standard

Label identification: must comply with the requirements of GB 7718 and GB 28050, and must specifically indicate the content and proportion of α-linolenic acid
Storage conditions: recommended temperature ≤25℃, relative humidity ≤60%, stored away from light
Transportation specifications: refer to GB/T 30354 to prevent oxidation and deterioration

Technical evolution analysis

Compared with the 2010 version of the standard, the new version has the following major changes:
1. Added trans fatty acid detection requirements (≤0.5%)
2. Adjusted the acid value index range (1.0-3.0mg/g for crude oil, ≤0.5mg/g for refined oil)
3. Introduction of gas chromatography-mass spectrometry as an arbitration method

More samples: GB 18306-2015 GB 50021-2001(2009) JC/T 2453-2018

Sample only — not a preview of LS/T 3261-2019