Zhang et al. 2017 — Nutrient profile of processed red raspberries for nutrition labeling
This market basket study characterised the nutrient content and variation in processed red raspberry (Rubus idaeus L.) products, including individually quick frozen (IQF), puree, and juice concentrates, collected from US retail, processing plants, and distributors in 2017. The study was conducted collaboratively between Illinois Institute of Technology and USDA Agricultural Research Service (Beltsville Human Nutrition Research Center) to provide new data to the USDA nutrient composition database. Key findings: IQF and puree with seeds are excellent sources of dietary fiber (≥20% DV per FDA criteria); IQF and puree are good sources (10-19% DV) of copper, thiamin, riboflavin, and folate; all forms are excellent or good sources of vitamin C and manganese.
Key numbers
Study: market basket design; samples from US retail (15), processors, and distributors; ~38% domestic, ~62% import share for IQF. Fiber: IQF and seeded puree meet FDA “excellent source” threshold (≥20% DV). Copper: 10-19% DV (good source). No heavy metal contamination data reported; this is a nutritional characterization study focused on dietary fiber, vitamins, and minerals (Cu, Mn, thiamin, riboflavin, folate, vitamin C, lutein/zeaxanthin).
Methods (brief)
Market basket sampling per USDA National Food and Nutrient Analysis Program (NFNAP) protocol; stratified three-stage design using US Census population density and ACNielsen retail sales data. Chemical analyses by pre-qualified laboratories using AOAC and validated HPLC methods. Nutrient Data Laboratory-directed purchasing; Virginia Tech for sample preparation.
Implications
Certification: no heavy metal data; outside the core scope of this wiki. This paper contains no metal contamination measurements.
Courses: useful incidentally for understanding USDA nutrient database methodology; not applicable to heavy metal courses.
App: not applicable; no contamination data.
Wiki pages updated on ingest
None. This paper reports nutrient composition data only and contains no heavy metal contamination measurements. It is a misclassified P3 paper: no agency affiliation (USDA ARS involvement as a co-author is institutional, not an agency report), and the content is outside the heavy metals scope of this wiki.