کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9441725 | 1301567 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Volatile components and antibacterial effects of pine needle (Pinus densiflora S. and Z.) extracts
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش تغذیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Volatile components and antibacterial effects of pine needle (Pinus densiflora S. and Z.) extracts Volatile components and antibacterial effects of pine needle (Pinus densiflora S. and Z.) extracts](/preview/png/9441725.png)
چکیده انگلیسی
The antibacterial effects of the volatile components extracted from Pinus densiflora S. and Z., by simultaneous steam distillation and solvent extraction (SDE), were examined on six foodborne bacteria using Bioscreen C (a computer-controlled shake-incubator-reader). The SDE extracts of P. densiflora obtained after 1.5 or 2.0 h at pH 3.6 exhibited a strong growth inhibitory effect on Escherichia coli O157:H7 and their overall antibacterial activities against the various bacteria tested tended to increase with increased extraction time and with a lower extraction pH. The major volatile components of the SDE extracts obtained at pH 3.6 and 1.5 h, as determined by gas chromatography, were α-ocimene (29.3%), sabinene (10.9%), β-myrcene (9.6%), β-caryophyllene (8.0%), β-cadinene (7.3%), α-terpinolene (4.9%), 2-hexanal (4.5%), and β-pinene (4.3%). The addition of 8% or 10% (v/v) of the SDE extracts to culture broth completely inhibited the growths of Bacillus cereus, Salmonella Typhimurium, and Staphylococcus aureus. The intracellular adenosine triphosphate (ATP) concentration of S. Typhimurium treated with P. densiflora extract reduced to 0.165 μm from 0.595 μm, whereas the ATP concentration in culture supernatants was increased to 0.469 μm form 0.065 μm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Microbiology - Volume 22, Issue 1, January 2005, Pages 37-45
Journal: Food Microbiology - Volume 22, Issue 1, January 2005, Pages 37-45
نویسندگان
Yong-Suk Kim, Dong-Hwa Shin,