Evidence map›Paper›PMID 34012041›Full record

ArticleScientific reports2021

Optimization of sunflower head pectin extraction by ammonium oxalate and the effect of drying conditions on properties.

Xuemei Ma, Jiayi Yu, Jing Jing, Qian Zhao, Liyong Ren, Zhiyong Hu

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
5.1field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 29 citations in OpenAlex.

  1. Calcium-Independent Gelation ofFoods (Basel, Switzerland) · 2026
    Article
  2. Review
  3. Pectic Polysaccharides Recovery from Rapeseed MealFoods (Basel, Switzerland) · 2026
    Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Polysaccharides ofInternational journal of molecular sciences · 2022
    Article
  9. Article
  10. The Active Components of Sunflower (Frontiers in nutrition · 2021
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Xuemei MaSchool of Chemical Engineering and Technology, North University of China, Taiyuan, 030051, China. maxuemei@nuc.edu.cn.
Jiayi YuSchool of Chemical Engineering and Technology, North University of China, Taiyuan, 030051, China.
Jing Jing *School of Chemical Engineering and Technology, North University of China, Taiyuan, 030051, China.
Qian Zhao *School of Chemical Engineering and Technology, North University of China, Taiyuan, 030051, China.
Liyong Ren *School of Chemical Engineering and Technology, North University of China, Taiyuan, 030051, China.
Zhiyong Hu *School of Chemical Engineering and Technology, North University of China, Taiyuan, 030051, China.
North University of China · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pectin is a kind of natural and complex carbohydrates which is extensively used in food, chemical, cosmetic, and pharmaceutical industries. Fresh sunflower (Helianthus annuus L.) heads were utilized as a novel source of pectin extracted by ammonium oxalate. The conditions of the extraction process were optimized implementing the response surface methodology. Under optimal extraction parameters (extraction time 1.34 h, liquid-solid ratio 15:1 mL/g, ammonium oxalate concentration 0.76% (w/v)), the maximum experimental yield was 7.36%. The effect of spray-drying and freeze-drying on the physiochemical properties, structural characteristics, and antioxidant activities was investigated by FT-IR spectroscopy, high performance size exclusion chromatography, and X-ray diffraction. The results showed freeze-drying lead to decrease in galacturonic acid (GalA) content (76.2%), molecular weight (M

Identifiers

PMID34012041
PMCPMC8134464
OpenAlexW3160155281

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.