Effects of Steam Explosion Combined with Ultrafine Grinding on the Physicochemical Properties, Antioxidant Capacity, and Volatile Profiles of Morchella sextelata Stipe Powders.
- 1Shandong Key Laboratory of Applied Technology for Protein and Peptide Drugs, School of Pharmaceutical Science and Food Engineering, Liaocheng University, Liaocheng 252000, China.
- 2College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China.
Abstract
Morchella sextelata stipe is an underutilized by-product with potential for value-added food applications. This study investigated whether steam explosion (SE) pretreatment could enhance the effects of subsequent ultrafine grinding (UG) on the physicochemical properties, antioxidant capacity, and volatile profiles of stipe powders. Conventional grinding, UG, SE, and combined SE-UG treatments were compared using particle-size analysis, SEM, FT-IR, XRD, antioxidant assays, and HS-SPME-GC-MS. SE-UG reduced the median particle size (D50) from 88.88 to 10.46 μm and increased the water solubility index from 31.20% to 36.55%. It also caused extensive microstructural disruption and altered crystallinity without major changes in functional groups. SE-UG showed the highest DPPH and ABTS radical-scavenging activities, whereas SE and SE-UG exhibited similarly high total antioxidant capacity, with no significant difference between the two treatments. Volatile profiling showed treatment-dependent changes, with several furans and pyrazines occurring at higher relative abundances in SE-containing groups. These findings indicate that SE pretreatment facilitates subsequent UG and improves selected physicochemical and antioxidant properties while markedly modifying the volatile profile, supporting the value-added utilization of M. sextelata stipes.
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BibTeX
@article{jin2026effects,
title = {{Effects of Steam Explosion Combined with Ultrafine Grinding on the Physicochemical Properties, Antioxidant Capacity, and Volatile Profiles of Morchella sextelata Stipe Powders.}},
author = {Jiaqi Jin and Fei Lao and Feng Kong and Lele Cao and Linhui Feng and Jia Chen and Jihong Wu and Xingfeng Guo},
journal = {Foods (Basel, Switzerland)},
year = {2026},
month = oct,
doi = {10.3390/foods15203748},
url = {https://europepmc.org/article/MED/42940385},
note = {CC BY},
}
RIS
TY - JOUR
TI - Effects of Steam Explosion Combined with Ultrafine Grinding on the Physicochemical Properties, Antioxidant Capacity, and Volatile Profiles of Morchella sextelata Stipe Powders.
AU - Jiaqi Jin
AU - Fei Lao
AU - Feng Kong
AU - Lele Cao
AU - Linhui Feng
AU - Jia Chen
AU - Jihong Wu
AU - Xingfeng Guo
PY - 2026
DA - 2026/10/21
JO - Foods (Basel, Switzerland)
DO - 10.3390/foods15203748
UR - https://europepmc.org/article/MED/42940385
AB - Morchella sextelata stipe is an underutilized by-product with potential for value-added food applications. This study investigated whether steam explosion (SE) pretreatment could enhance the effects of subsequent ultrafine grinding (UG) on the physicochemical properties, antioxidant capacity, and volatile profiles of stipe powders. Conventional grinding, UG, SE, and combined SE-UG treatments were compared using particle-size analysis, SEM, FT-IR, XRD, antioxidant assays, and HS-SPME-GC-MS. SE-UG reduced the median particle size (D50) from 88.88 to 10.46 μm and increased the water solubility index from 31.20% to 36.55%. It also caused extensive microstructural disruption and altered crystallinity without major changes in functional groups. SE-UG showed the highest DPPH and ABTS radical-scavenging activities, whereas SE and SE-UG exhibited similarly high total antioxidant capacity, with no significant difference between the two treatments. Volatile profiling showed treatment-dependent changes, with several furans and pyrazines occurring at higher relative abundances in SE-containing groups. These findings indicate that SE pretreatment facilitates subsequent UG and improves selected physicochemical and antioxidant properties while markedly modifying the volatile profile, supporting the value-added utilization of M. sextelata stipes.
SN - 2304-8158
ER -