Environmental Scanning Electron Microscopy of Raw and Heated Veal Semimembranosus Muscle
محل انتشار: مجله علوم و فناوری کشاورزی، دوره: 2، شماره: 3
سال انتشار: 1379
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 57
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شناسه ملی سند علمی:
JR_JASTMO-2-3_002
تاریخ نمایه سازی: 22 آبان 1402
چکیده مقاله:
The environmental scanning electron microscopy (ESEM) is a new development in the
field of electron microscopy. In this study ESEM has been used to study the structure of
veal semimembranosus muscle. Four treatments, raw (control), conventional heating,
domestic and industrial microwave heating, were observed using ESEM. The temperature
used in conventional heating was ۱۶۳ ۰C. Frequency applied for microwave heating was
۲۴۵۰ MHz with two wattage levels of ۷۰۰ (domestic microwave) and ۱۲۰۰۰ (industrial microwave).
All samples were heated to ۷۰ ۰C internal temperature. Occasional cracks
across the individual muscle fiber and shrinkage were present in all images of the structure
for heated muscle. Erosion at the edges of muscle fibers was clear and increased with
continued heating. A gap between perimysium of each muscle bundle was effected with
the domestic microwave samples in cross section. This phenomenon was more apparent in
industrial microwave heating and the depth of gap between perimysial collagenous fiber
is more than that in domestic microwave heating. More damage was observed in the connective
tissue network for conventional heating as compared with microwave heating.
Denaturation and distortion of connective tissue caused more damage during longer time
of conventional heating. Surface damage in structure of semimembranosus was not observed
in either conventional heating or the low powered microwave heating. Rapid
increase of heat and penetration of the microwaves, at the ۱۲۰۰۰ wattage level, caused
granulation and separation of some parts of the muscle fibers.
کلیدواژه ها:
Environmental scanning electron microscopy ، Veal ، Semimembranosus Muscle ، Microwave heating ، Conventional heating
نویسندگان
M. S. Yarmand
Department of Food Science and Technoloy, Faculty of Agriclture, University of Tehran, Islamic Republic of Iran.
P. A. Baumgartner
Faculty of Science and Technology, University of Western Sydney, Hawkesbury, Richmond, NSW ۲۷۵۳, Australia.