This study investigated the potential for using vegetable powders as a natural
replacement for sodium nitrite and their effects on the physicochemical
characteristics of alternatively cured pork products. We analyzed pork products
subjected to four treatments: control (0.015% sodium nitrite), Chinese
cabbabe powder (CCP) treatment (0.4% Chinese cabbage powder), radish
powder (RP) treatment (0.4% radish powder), and spinach powder (SP)
treatment (0.4% spinach powder). Among the vegetable powders prepared in
this study, SP had the highest (p<0.05) nitrate content, while CCP had
the lowest (p<0.05). The cooking yields from these treatments were not
significantly different from each other. However, the products with vegetable
powders had higher (p<0.05) pH and thiobarbituric acid reactive
substances values than the control. Pork products with vegetable powders also
showed lower CIE L* values and higher CIE b* values than the nitrite-added
control. RP treatment had similar (p>0.05) CIE a* values to the control,
while SP treatment had the lowest (p<0.05) CIE a* values. The residual
nitrite content was lower (p<0.05) in the vegetable powder added pork
products than in the control, although nitrosyl hemochrome and total pigment
contents in the CCP and RP treatments were similar (p>0.05) to those in
the control. The control, CCP, and RP treatments showed curing efficiencies
greater than 80%, indicating that CCP and RP would be promising potential
replacements for sodium nitrite. The results of this study suggest that RP may
be a suitable natural replacement for sodium nitrite to produce alternatively
cured meat products, compared to other leafy vegetable powders.
This study investigated the effects of Chinese cabbage powder as a natural replacement for sodium nitrite on the qualities of alternatively cured pork products. Chinese cabbages grown in Korea were collected and used for preparing hot air dried powder. Different levels of Chinese cabbage powder were added to pork products and evaluated by comparing these products to those with sodium nitrite or a commercially available celery juice powder. The experimental groups included control (100 ppm sodium nitrite added), treatment 1 (0.15% Chinese cabbage powder added), treatment 2 (0.25% Chinese cabbage powder added), treatment 3 (0.35% Chinese cabbage powder added), and treatment 4 (0.4% celery juice powder added). The cooking yields and pH values of treatments 1 to 3 were significantly lower (p<0.05) than the control. However, all of the alternatively cured products were redder (higher CIE a* values; p<0.05) than the control and this result was supported from higher nitrosyl hemochrome, total pigment, and curing efficiency. Furthermore, the inclusion of vegetable powders to these products resulted in considerably less residual nitrite content. However, Chinese cabbage powder (0.25% and 0.35%) was effective in producing alternatively cured meat products with a higher curing efficiency comparable to those of the traditionally cured control or the products with celery juice powder. Therefore, Chinese cabbage powder exhibited the efficacy for use as a natural replacer for alternatively cured meat products.
In this paper, we address data transmission systems using multiple linear polarized antennas over pure line-of-sight (LoS) wireless channels. We investigate the impact of antenna angles from the perspective of both channel capacity and error performance. We show that the optimal angles from the two perspectives are different, and evaluate the performance of the two optimal angles.
Ethics approval (IRB/IACUC) (This field may be published.) This article does not require IRB/IACUC approval because there are no human and animal participants.
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