Food and Fermentation Industries >

2025 , Vol. 51 >Issue 15: 303 - 312

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.041019

Analysis of nutrient composition and antioxidant activity of pear pomace

  • TIAN Xiayu ,
  • ZHANG Nan ,
  • CHENG Yudou ,
  • WANG Yongxia ,
  • GUAN Junfeng
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  • 1(College of Life Science and Food Engineering, Hebei University of Engineering, Handan 056000, China)
    2(Institute of Biotechnology and Food Science, Hebei Academy of Agricultural and Forestry Sciences,Shijiazhuang 050051, China)

Received date: 2024-09-11

  Revised date: 2024-12-02

  Online published: 2025-08-22

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Abstract

Pear pomace is a by-product obtained during pear processing.The study evaluated the nutrient composition and antioxidant activity of six different pear pomaces from ‘Yali', ‘Huangguan', ‘Xuehua', ‘Akizuki', ‘Yuluxiang', and ‘Anli'.Additionally, a comprehensive analysis was conducted using principal component analysis.The results showed that the contents of fat, protein, and total dietary fiber were 0.36-1.44, 1.67-4.22, and 50.97-68.2 g/100 g, respectively.Among them, ‘Yali' and ‘Huangguan' pear pomace exhibited high-fat content, ‘Akizuki' and ‘Huangguan' pear pomace exhibited high-protein content, and ‘Anli' pear pomace exhibited the highest dietary fiber content.The average content of total amino acids in pear pomace was 1.64 g/100 g, with essential amino acids accounting for 32.6%-36.3% of total amino acids, which was close to the FAO/WHO model protein.‘Akizuki' pear pomace exhibited the highest total soluble sugar content (351.96 mg/g) among six pear pomaces.The highest organic acids content was observed in ‘Huangguan' pear pomace (6.54 mg/g).‘Anli', ‘Yuluxiang', and ‘Huangguan' pear pomaces exhibited high levels of total phenol and total flavonoid content, which was consistent with the high DPPH radical scavenging and hydroxyl radical scavenging activity.The mineral element analysis showed that pear pomace conformed to a high K (average 7 466.72 mg/kg) and low Na (average 24.46 mg/kg) profile.Comprehensive analysis of pear pomace quality followed the sequence:‘Huangguan' > ‘Akizuki' > ‘Yuluxiang' > ‘Yali' > ‘Xuehua' > ‘Anli'.The nutrient composition varied among different pear cultivars, with relatively high levels of most nutrients observed in the ‘Huangguan' pear pomace.These results suggest that the pear pomace contains various nutrients, providing a theoretical basis for its further application and development.

Key words： pear pomace; protein; dietary fiber; total flavonoids; total phenols; antioxidant activity

Cite this article

TIAN Xiayu , ZHANG Nan , CHENG Yudou , WANG Yongxia , GUAN Junfeng . Analysis of nutrient composition and antioxidant activity of pear pomace[J]. Food and Fermentation Industries, 2025 , 51(15) : 303 -312 . DOI: 10.13995/j.cnki.11-1802/ts.041019

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