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This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
This document replaces NY/T 1520-2007 Cassava. In addition to structural adjustments and editorial changes, the following main technical changes have been made with respect to NY/T 1520-2007:
a) the warning content is modified (see important note; warning in Edition 2007);
b) the application scope of this standard is modified, covering cassava for animal feed (see Clause 1; Clause 1 of Edition 2007);
c) the clause “Normative references” is modified, as follows:
? normative reference GB 5009.36, GB 23200.20 and GB 23200.57 are added (see Clause 2);
? GB/T 8868 and NY/T 1096 are deleted (see Clause 2 of Edition 2007);
? GB 5009.9, GB 5009.11, GB 5009.12, GB 5009.15 and GB 5009.17 are modified (see Clause 2; Clause 2 of Edition 2007);
d) the terms and definitions of edible cassava and cassava as raw material for industrial are modified (see 3.1 and 3.2; 3.1 and 3.2 of Edition 2007);
e) the term and definition of cassava for animal feed is added (see 3.3);
f) terms and definitions of varietal character (see 3.3 of Edition 2007), plant diseases and insect pests (see 3.4 of Edition 2007), mechanical injure (see 3.5 of Edition 2007), cracked cassava (see 3.6 of Edition 2007) and hollow (see 3.7 of Edition 2007) are deleted;
g) basic requirements are modified (see 4.1; 4.1 of Edition 2007);
h) grades and specifications of edible cassava are deleted (see 4.2 and 4.3 of Edition 2007);
i) the hygienic requirements are changed to quality and safety requirements, the inorganic arsenic is changed to total arsenic, the limit requirements for starch, abamectin, acetochlor and hydrogen cyanide are added, and the limit requirements for glyphosate are deleted (see 4.2; 4.4 of Edition 2007);
j) the basic requirements, grades and specifications are changed to measuring parts (see 5.1; 5.1 of Edition 2007);
k) test methods for abamectin, acetochlor and hydrogen cyanide are added (see 5.7, 5.8 and 5.10);
l) the acceptance inspection, batching and judgment rules are modified (see 6.1.1, 6.2 and 6.4; 6.1.1, 6.2, 6.4 of Edition 2007);
m) "Marking" is modified (see Clause 7; Clause 7 of Edition 2007);
n) "Packaging, transportation and storage" are modified (see Clause 8; Clause 8 of Edition 2007);
o) Annexes A and B are deleted (see Annexes A and B of Edition 2007).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This standard was proposed by the Farm Reclamation Bureau of the Ministry of Agriculture and Rural Affairs of the People's Republic of China.
This standard is under the jurisdiction of the Technical Committee on Tropical Crops and Products of Standardization Administration of the Ministry of Agriculture and Rural Affairs of the People's Republic of China.
The previous edition of this document is as follows:
——this standard was firstly issued in 2007 as NY/T 1520-2007;
——this edition is the first revision.
Cassava
1 Scope
This standard specifies the terms and definitions, requirements, test methods, inspection rules, marking, packaging, transportation and storage of cassava.
This standard is applicable to the assessment on edible cassava, industrial cassava and cassava for animal feed.
Important note: Fresh cassava shall not be eaten before cooking, and shall be eaten after peeling, stewing, etc.
2 Normative references
The following referenced documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 5009.9 National food safety standard - Determination of starch in foods
GB 5009.11 National food safety standard - Determination of total arsenic and abio-arsenic in foods
GB 5009.12 National food safety standard - Determination of lead in foods
GB 5009.15 National food safety standard - Determination of cadmium in foods
GB 5009.17 National food safety standard - Determination of total mercury and organic mercury in foods
GB 5009.36 National food safety standard - Determination of cyanide in foods
GB/T 5501 Inspection of grain and oils - Determination of fresh sweet potato
GB 23200.20 National food safety standard - Determination of abamectin residue in foods - Liquid chromatography - mass spectrometry
GB 23200.57 National food safety standard - Determination of acetochlor residue in foods
NY/T 761 Pesticide multiresidue screen methods for determination of organophosphorus pesticides, organochlorine pesticides, pyrethroid pesticides and carbamate pesticides in vegetables and fruits
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
edible cassava
fresh cassava that can be eaten after stewing or other cooking procedure
3.2
cassava as raw material for industrial
fresh cassava used for producing starch, alcohol and other processed products
3.3
cassava for animal feed
fresh cassava used for processing feed or as feed raw material
4 Requirements
4.1 Basic requirements
The cassava shall have obvious varietal characters, fresh and clean appearance, be free of obvious defects (plant diseases and insect pests, decay, mildew spots, mechanical injure) and regular shape, and the pulp shall be free of blackened texture, peculiar smell or obvious sediment and other attachments.
4.2 Quality safety requirements
The quality safety indicators of edible cassava, cassava as raw material for industrial and cassava for animal feed shall meet those specified in Table 1.
Table 1 Quality safety requirements
Indicator Requirements
Edible cassava Cassava as raw material for industrial Cassava for animal feed
Starch, g/100g — ≥23.0 —
Total arsenic (by As), mg/kg ≤0.5 ≤0.5 ≤2.0
Lead (by Pb), mg/kg ≤0.2 — ≤10.0
Cadmium (by Cd), mg/kg ≤0.1 ≤0.1 ≤1.0
Total mercury (by Hg), mg/kg ≤0.01 ≤0.01 ≤0.1
Abamectin, mg/kg ≤0.01 — —
Acetochlor, mg/kg ≤0.1 — —
Trichlorfon, mg/kg ≤0.1 ≤0.2 ≤0.2
Dimethoate, mg/kg ≤1.0 ≤1.0 ≤1.0
Chlorpyrifos, mg/kg ≤1.0 ≤1.0 ≤1.0
Hydrogen cyanide, mg/kg ≤50.0 — ≤100.0
?
5 Test methods
5.1 Measuring parts
The pollutant limit indicators such as total arsenic, lead, cadmium, total mercury, starch and hydrogen cyanide are measured in edible parts of fresh cassava (pulp). The pesticide residue limit indicators such as abamectin, acetochlor, trichlorfon, dimethoate and chlorpyrifos are measured in the whole fresh cassava (including peel).
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods
6 Inspection rules
7 Marking
8 Packaging, transportation and storage
