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(b) "U. S. Grade B" or "U. S. Choice" is the quality of canned blueberries that possess similar varietal characteristics; that possess a good color; that are reasonably free from defects; that possess a reasonably good character; that possess a normal flavor and odor; and that score not less than 80 points when scored in accordance with the scoring system outlined in this subpart.

(c) "U. S. Grade C" or "U. S. Standard" is the quality of canned blueberries that possess similar varietal characteristics; that possess a fairly good color; that are fairly free from defects; that possess a fairly good character; that possess a normal flavor and odor; and that score not less than 70 points when scored in accordance with the scoring system outlined in this subpart.

(d) "U. S. Grade D" or "Substandard" is the quality of canned blueberries that fail to meet the requirements of U. 8. Grade C or U. S. Standard. LIQUID MEDIA, FILL OF CONTAINER, AND DRAINED WEIGHTS

§ 52.584 Recommended designations of liquid media and Brix measurements, "Cut-out" requirements for liquid media are not incorporated in the grades of the finished product since sirup or any other liquid medium, as such, is not a factor of quality for the purpose of these grades.

(a) It is recommended that canned blueberries have the following indicated "cut-out" Brix measurement for the respective designation, which designations include, but are not limited to, the following:

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Analysis of the Association of Official Agricultural Chemists." The degrees Brix of the liquid from canned blueberries may be determined by any other method which gives equivalent results. § 52.585 Recommended fill of container.

The recommended fill of container is not incorporated in the grades of the finished product since fill of container, as such, is not a factor of quality for the purpose of these grades. It is recommended that each container of canned blueberries be filled with blueberries as full as practicable without impairment of quality and that the product and packing medium occupy not less than 90 percent of the volume of the container.

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The minimum drained weight recommendations are not incorporated in the grades of the finished product since drained weight, as such, is not a factor of quality for the purpose of these grades. The drained weight of canned blueberries is determined by emptying the contents of the container upon a United States Standard No. 8 circular sieve of proper diameter containing 8 meshes to the inch (0.0937inch, ±3%, square openings) so as to distribute the product evenly, inclining the sieve slightly to facilitate drainage, and allowing to drain for two minutes. The drained weight (or drained blueberries) is the weight of the sieve and the blueberries less the weight of the dry sieve. A sieve 8 inches in diameter is used for the equivalent of No. 3 size cans (404 x 414) and smaller, and a sieve 12 inches in diameter is used for containers larger than the equivalent of the No. 3 size can.

TABLE I-RECOMMENDED MINIMUM DRAINED WEIGHTS FOR CANNED BLUEBERRIES

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(a) (A) classification. Canned blueberries that possess a very good color may be given a score of 18 to 20 points. "Very good color" means a practically uniform, bright, dark blue-purple color typical of blueberries which had been properly processed from well-matured blueberries.

(b) (B) classification. If the canned blueberries possess a good color, a score of 16 or 17 points may be given. Canned blueberries that fall into this classification shall not be graded above U. S. Grade B or U. S. Choice, regardless of the total score for the product (this is a limiting rule). "Good color" means a reasonably uniform, dark blue-purple color typical of blueberries which had been properly processed from reasonably well-matured blueberries.

(c) (C) classification. If the canned blueberries possess a fairly good color, a score of 14 or 15 points may be given. Canned blueberries that fall into this classification shall not be graded above

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(1) "Cap stems" are small stems which attach berries to the branch and means single cap stems or joined double cap stems with or without berries attached.

(2) A "cluster" means three or more joined cap stems with or without berries attached.

(3) "Undeveloped berries" are mummified berries with wrinkled or tough skins or which may be pathologically defective.

(b) (A) classification. Canned blueberries that are practically free from defects may be given a score of 38 to 40 points. "Practically free from defects” means that the canned blueberries are reasonably free from cap stems and for each 20 ounces of net weight, or the equivalent thereof, there may be present:

(1) Not more than a total of 2 whole leaves or large stems, provided such whole leaves and any other portions of leafy material do not exceed 2 square inch;

(2) Not more than 5 berries that are undeveloped or edible berries other than blueberries or berries that are damaged; and

(3) In native (or wild) type, not more than an average of 12 clusters in all containers comprising the sample, provided there are no more than 16 clusters in any single container; or

(4) In cultivated type, not more than 4 clusters.

(c) (B) classification. If the canned blueberries are reasonably free from defects, a score of 32 to 35 points may be given. Canned blueberries that fall into this classification shall not be graded above U. S. Grade B or U. S. Choice, regardless of the total score for the product (this is a limiting rule). "Reasonably free from defects" means that the canned blueberries are reasonably free from cap stems and for each 20 ounces of net weight, or the equivalent thereof, there may be present:

(1) Not more than a total of 4 whole leaves or large stems, provided such whole leaves and any other portions of leafy material do not exceed 34 square inch;

(2) Not more than 8 berries that are undeveloped or edible berries other than blueberries or berries that are damaged; and

(3) In Native (or wild) type, not more than an average of 20 clusters in all containers comprising the sample, provided there are no more than 28 clusters in any single container; or

(4) In Cultivated type, not more than 8 clusters.

(d) (C) classification. If the canned blueberries are fairly free from defects, a score of 28 to 31 points may be given. Canned blueberries that fall into this classification shall not be graded above U. S. Grade C or U. S. Standard, regardless of the total score for the product (this is a limiting rule). "Fairly free from defects" means that the canned blueberries are fairly free from cap stems and for each 20 ounces of net weight, or the equivalent thereof, there may be present:

(1) Not more than a total of 6 whole leaves or large stems, provided such whole leaves and any other portions of leafy material do not exceed 1 square inch;

(2) Not more than 10 berries that are undeveloped or edible berries other than blueberries or berries that are damaged; and

(3) In Native (or wild) type, not more than an average of 28 clusters in all containers comprising the sample, provided there are no more than 40 clusters in any single container; or

(4) In Cultivated type, not more than 12 clusters.

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(a) (A) classification. Canned blueberries that possess a good character may be given a score of 36 to 40 points. "Good character" means that the blueberries are reasonably firm, reasonably fleshy, practically whole, and practically intact with not more than 10 percent by weight of the drained blueberries that may be crushed, mushy, or broken berries.

(b) (B) classification. If the canned blueberries possess a reasonably good character, a score of 32 to 35 points may be given. Canned blueberries that fall into this classification shall not be graded above U. S. Grade B or U. 8. Choice, regardless of the total score for the product (this is a limiting rule). "Reasonably good character" means that the blueberries may be lacking in firmness and fleshy texture but are reasonably whole and reasonably intact with not more than 15 percent by weight of the drained blueberries that may be crushed, mushy, or broken berries.

(c) (C) classification. If the canned blueberries possess a fairly good character, a score of 28 to 31 points may be given. Canned blueberries that fall into this classification shall not be graded above U. S. Grade C or U. S. Standard, regardless of the total score for the product (this is a limiting rule). "Fairly good character" means that the blueberries are fairly whole and fairly intact with not more than 30 percent by weight of the drained blueberries that may be crushed, mushy, or broken berries.

(d) (SStd) classification. Canned blueberries that fail to meet the requirements of paragraph (c) of this section may be given a score of 0 to 27 points and shall not be graded above U. S. Grade D or Substandard, regardless of the total score for the product (this is a limiting rule).

LOT INSPECTION AND CERTIFICATION § 52.592 Ascertaining the grade of a lot.

The grade of a lot of the processed product covered by these standards is determined by the procedures set forth in the regulations governing inspection and certification of processed fruits and vegetables, processed products thereof.

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Subpart-United States Standards for

Grades of Frozen Blueberries SOURCE: 52.611 to 52.620 appear at 18 F.R. 7944, Dec. 9, 1958, unless otherwise noted. PRODUCT DESCRIPTION, TYPES, AND GRADES § 52.611 Product description.

Frozen blueberries are prepared from sound, properly ripened fresh fruit of the blueberry bush (Genus Vaccinium), including species or varieties often called "huckleberries," but not of the Genus Gaylussacia; are cleaned and stemmed; are properly washed; are packed with or without packing media; and are frozen and maintained at temperatures necessary for the preservation of the product. [20 F. R. 3096, May 7, 1955]

§ 52.612 Types of frozen blueberries.
(a) Native (or wild) type.
(b) Cultivated type.

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that are practically free from defects; that possess a good character; that possess a normal flavor and odor; and are of such quality with respect to color as to score not less than 90 points when scored in accordance with the scoring system outlined in this subpart.

(b) "U. S. Grade B" or "U. S. Choice" is the quality of frozen blueberries that possess similar varietal characteristics; that possess a good color; that are reasonably free from defects; that possess a reasonably good character; that possess a normal flavor and odor; and that score not less than 80 points when scored in accordance with the scoring system outlined in this subpart.

(c) "U. S. Grade C" or "U. S. Standard" is the quality of frozen blueberries that possess similar varietal characteristics; that possess a fairly good color; that are fairly free from defects; that possess a fairly good character; that possess a normal flavor and odor; and that score not less than 70 points when scored in accordance with the scoring system outlined in this subpart.

(d) "U. S. Grade D" or "Substandard" is the quality of frozen blueberries that fail to meet the requirements of U.S. Grade C or U. S. Standard.

FACTORS OF QUALITY

§ 52.614 Ascertaining the grade.

(a) The grade of frozen blueberries may be ascertained by considering, in conjunction with the requirements of the respective grade, the respective ratings for the factors of color, absence of defects, and character.

(b) The relative importance of each factor which is scored is expressed numerically on the scale of 100. The maximum number of points that may be given such factors are:

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(c) The scores for the factors of color, absence of defects, and character of frozen blueberries are determined when the product is sufficiently free from ice crystals to permit handling of the blueberries.

(d) "Normal flavor and odor" means that the product is free from objectionable flavors and objectionable odors of any kind.

§ 52.615 Ascertaining the rating for the factors which are scored.

The essential variations within each factor which is scored are so described that the value may be ascertained for such factors and expressed numerically. The numerical range within each factor which is scored is inclusive (for example, "18 to 20 points" means 18, 19, or 20 points).

§ 52.616 Color.

(a) (A) classification. Frozen blueberries that possess a very good color may be given a score of 18 to 20 points. "Very good color" means that the blueberries possess a practically uniform, bright, dark blue-purple color typical of properly matured berries for the variety and that there may be present not more than 5 percent by count of berries that possess a red-purple color. Frozen blueberries that are undercolored (not at least red-purple color) or that have a definite green cast are considered "green berries." (See § 52.617 (a).)

(b) (B) classification. If the frozen blueberries possess a good color, a score of 16 or 17 points may be given. "Good color" means that the blueberries possess a reasonably uniform, dark blue-purple color typical of reasonably well-matured berries for the variety and that there may be present not more than 10 percent by count of berries that possess a red-purple color. Frozen blueberries that are under-colored (not at least redpurple color) or that have a definite green cast are considered "green berries." (See § 52.617 (a).)

(c) (C) classification. If the frozen blueberries possess a fairly good color, a score of 14 or 15 points may be given. Frozen blueberries that fall into this classification shall not be graded above U. S. Grade C or U. S. Standard, regardless of the total score for the product (this is a limiting rule). "Fairly good color" means that the blueberries may be moderately variable in color, but are not definitely dull or off color, and there may be present not more than 20 percent by count of berries that possess a red-purple color. Frozen blue berries that are undercolored (not at least red-purple color) or that have a definite green cast are considered "green berries." (See § 52.617 (a).)

(d) (SStd) classification. Frozen blueberries that fail to meet the requirements of paragraph (c) of this section may be given a score of 0 to 13 points

and shall not be graded above U. S. Grade D or Substandard, regardless of the total score for the product (this is a limiting rule).

§ 52.617 Absence of defects.

(a) General. The factor of absence of defects refers to the degree of freedom from harmless extraneous material (such as leaves and large stems); from clusters; from cap stems; from green berries, undeveloped berries, or edible berries other than blueberries; and from berries damaged by insect, pathological, cr any other injury.

(1) "Green berries" are blueberries that are undercolored and do not possess at least a red-purple color or that have a definite green cast, even though the over-all color of the berries may not be a true green color.

(2) "Cap stems" are small stems which attach berries to the branch and means single cap stems or joined double cap stems with or without berries attached.

(3) A "cluster" means three or more joined cap stems with or without berries attached.

(4) "Undeveloped berries" are mummified berries with wrinkled or tough skins or which may be pathologically defective.

(b) (A) classification. Frozen blueberries that are practically free from defects may be given a score of 36 to 40 points. "Practically free from defects" means that the frozen blueberries are reasonably free from cap stems and for each 16 ounces of net weight, or the equivalent thereof, there may be present:

(1) Not more than a total of 2 whole leaves or large stems, provided such whole leaves and any other portions of leafy material do not exceed 2 square inch;

(2) Not more than a total of 10 berries that are green or undeveloped or edible berries other than blueberries or berries that are damaged, provided not more than 5 berries are undeveloped or edible berries other than blueberries or berries that are damaged; and

(3) In Native (or wild) type, not more than an average of 12 clusters in all samples or containers comprising the sample, provided there are no more than 16 clusters in any single sample or in any single container; or

(4) In Cultivated type, not more than 4 clusters.

(c) (B) classification. If the frozen blueberries are reasonably free from de

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