Madridge Journal of Food Technology

ISSN: 2577-4182

Research Article

Evaluation of Mustard Powder as Natural Ingredient to reduce Antimicrobial levels and Physichochemical properties in Beef

Amir Hosseinvand1*, and Adeleh Sorkhinejad2

1Department of Agriculture, Islamic Azad University of Shahr-e-Qods branch, Tehran, Kalhor BLVD, Shahre Qods City, Tehran province, Iran
2Department of Chemistry, Islamic Azad University of Karaj branch, Karaj, Iran

*Corresponding author: Amir Hosseinvand, Department of Agriculture, Islamic Azad University of Shahr-e-Qods Branch, Tehran, Kalhor BLVD, Shahre Qods City, Iran, Tel: +989123033161, E-mail:

Received: February 2, 2019 Accepted: May 6, 2019 Published: May 13, 2019

Citation: Hosseinvand A, Sorkhinejad A. Evaluation of Mustard Powder as Natural Ingredient to reduce Antimicrobial levels and Physichochemical properties in Beef. Madridge J Food Technol. 2019; 4(1): 170-175. doi: 10.18689/mjft-1000126

Copyright: © 2019 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Nowadays, most of people would passion to using and purchase organic and natural foods without any artificial ingredients. Moreover, mustard is used in producing medicines, pickles, source of edible oils since ancient times, seasoning of meats and chicken. So the present study was undertaken to determine the chemical components of mustard powder, and then used it in grilled beef as a seasoning to improve sensory evaluation, and physicochemical properties, as well as inhibited Escherichia coli, Staphylococcus aureus and increased shelf life of meat. The results indicated that added mustard powder improving sensory evaluation of the grilled meat slices significantly, especially in odour, in the acceptability of meat treated with 2% level of mustard powder. Meanwhile, addition of mustard powder to fresh meat reduced the natural flora to undetectable levels at 4° or 30°C till 2 days from storage. Application of mustard powder was able to reduce E.coli numbers to uncountable levels at zero time during keeping samples.

In view of pH, TBA and TVN values, all of the grilled meat slices with added mustard powder decreased by increasing level on mustard powder concentration during storage times. Mustard powder at 2% level has antibacterial, anti-microflora, natural preserve spices in food, improved taste, smell and physical properties of meat and increased shelf life of meat. Finally mustard powder is acceptable to use as spice and natural ingredient to reduce antimicrobial loading in foodstuff. Further study in this area may be helpful for finding of new principle compound.

Keywords: Mustard powder; Antimicrobial; Physicochemical; Meat; E.coli.


The most important food-borne diseases, it is caused by agents such as E.coli, Salmonella, and S.aureus that enter the body through the intake of contaminated food materials are one of the primary public health concerns in the world [1]. In the present study, application of yellow mustard seed (Sinapis alba L.) as natural ingredient was studied in beef. There is little published data in the literature on application of natural and functional antibacterial ingredients in food science. White and red meats were one of the principal food stuff in human meals. The mustard seed is a source of natural antioxidants such as; tocopherole, compounds of hydroxyl benzoic family, trihydroxy phenolic compounds like flavones, flavonols (kaemferol, isorahmnetin) and ascorbic acid which protect oil from rancidity in emulsion. Moreover, this plant can be a good source of active components such as, isothiocyanates, phenolics, dithiolthiones and dietary fiber [2-4]. Mustard powder contained higher amounts of protein 36.69% and oil 40.64%. Moreover, oil of mustard seeds contained high amount of erucic acid 51.3%, and the major dominant unsaturated fatty acids were, oleic acid followed by linoleic and linolenic acids.

The objective of the present research was to reduce bacterial loading of E.coli and Staphylococcus aureus in grilled beef with mustard powder as antibacterial seasoning, and then assessment of addition of yellow mustard powder on some physicochemical properties on beef.

Materials and Methods

Chemical composition of mustard seeds powder

The analysis of moisture, ash, total carbohydrates, crude protein, crude fiber and fat were determined for the dried mustard seeds powder is described by the Association of Official Agricultural Chemists [5].

Determination of FA content

Fatty acid content of samples was determined by GCŽ. CarloErba Fractovap after KOH methanol hydrolysis and BF derivation. Supelco wax 10 column capillary Ž3 length 15 m, diameter 0.25 mm, film thickness 25 m. The temperature of the injector and detector was 225°C [6].

Ground beef and mustard powder preparation

Fresh beef was purchased from local butcher shop the day before each experiment. The meat was stored at 4°C over night. Also, all of the meats were kept at -18°C for 3 h, until the outer surface was frozen. Ground beef was prepared using aseptic procedures, sterile utensils and sanitized equipment. The meat was cut into 5 × 5 cm pieces, each on equal 100 gm, and then held it 4°C for 1 hour. After that it was inoculated with bacterial strains and treatment with mustard powder. In the present study the Sinapis alba seed (yellow mustard) spicy were collected from local market in Tehran, Iran. The seed was cleaned and grained to get mustard powder rich with active components. Antibacterial effects of mustard powder were one by well diffusion method, whereas, it was showed antibacterial activity against E.coli & Staph.aureus with 28 & 22 mm zone inhibition, respectively.

Sensory evaluation

The fresh beef used was previously described. For control sample, 2 gm salt was added to each piece. For treatment samples 2 gm salt plus different concentrations of mustard flour with 0.5, 1.0, 1.5, 2.0 and 2.5% levels. All samples were cooked on grilled at 200°C until the internal temperature reached to 71°C. Grilled meats were kept at 60°C until they were served to the panelists. Sixty staff at the food technology research institute who had received no formal training in sensory evaluation participated. Panelists were 30-60 years old and 75% were female. Each panelist received three 10 gm samples of grilled beef in a container coded with a randomly chosen three digit number, plus water. The panelists tasted samples and recorded the overall acceptability of each treatment product according to colour, smell, flavor and consistency. The experiments were repeated at least five times [7].

Bacterial strains

For this research, two reference strains Staphylococcus aureus ATCC 25923 and E.coli ATCC 25922 were obtained from microbial culture collection, Department of Microbiology, Faculty of Agriculture, Tehran University, Tehran, Iran. Strains were Activate on nutrient broth (NB) at 37°C for 24 h.

Effect of mustard powder on bacterial counts in meat slices

This experiment was divided into two parts; first part meat slices were thawed at 4°C overnight, then adding 0.5, 1.0, 1.5, 2.0 and 2.5% levels of mustard powder and salt before grilling. Total count (natural flora) of each sample was evaluated before and after treatment (seasoning) and stored for 2 days at 4°C or 30°C. Second part, grilled meat slices, then adding 0.5, 1.0, 1.5, 2.0 and 2.5% mustard powder and salt plus inoculation with 0.5 ml (1 × 105 cfu/ml) reference strains. All samples were kept in aluminum foul trays under sterilize conditions for 24 hours at 4°C or 30°C. Total bacterial counts were determined periodically after 0, 1, 2, 3 and 6 days according to the procedure mentioned by APHA [8]. In addition, salt was added in testifier samples.

Physical properties

pH value: pH value of meat product samples was examined according to the method as reported by Ockerman [9].

Chemical properties

Determination of total volatile bases Nitrogen (TVB-N):

Total volatile nitrogen was determined according to the method described by Winton and Winton [10]. The milligrams of TVB-N per 100 gm sample were obtained by number of milliliters of bound acid × 7.0.

Determination of Thiobarbituric Acid Value (TBA):

Malonaldehyde (the compound used as an index of lipid per oxidation) was determined following the procedure of Pearson et al. [11]. TBA value was expressed as mg malonaldehyde/kg sample by using the following equation.

TBA value (Mg malonaldehyde/kg sample)=absorbance × 7.8

Statistical analysis

The data obtained from treatments were analyzed by one-way ANOVA using ‘Proc Mixedʼ (SAS 8.2, Cary, NC, USA). In all cases, the level of statistical significance was of P<0.05. SAS program was used to statistical analyzed [12]. LSD means comparisons were conducted with the duncan option in SAS.

Results and Discussion

Physicochemical composition

The proximate analysis of beef samples with and without mustard powder with different concentrations presented in table 1. Mustard powder is contained a large amounts of both protein and oil contents. It could be also observed that, mustard flour is containing an adequate percentage of ash, dietary fiber and total carbohydrates [13-15].

The fatty acids composition of yellow mustard seeds oil was determined by gas chromatographic analysis, then presented the data in table 1. It is clear from the result that erucic acid (C22:1) was most predominant fatty acids in mustard seed oil, which was represented as ~51.03%. Mustard oil rich in erucic acid is considered undesirable and indigestible for human or animal organisms. It could be remarked that mustard seed oil contained a little amounts from total saturated fatty acids determined with ~6.93% as compared to the other edible oils. These results were shown in the study by Zheljazkov et al. [16] whereas it was recommended that the mustard oil has low saturated fat as compared to other cooking oils [17]. In contrary, the total unsaturated fatty acids in mustard seeds oil were considerable a high amount, which represented ~85%. The major types of unsaturated fatty acids were namely: Oleic, linoleic, linolenic and gadoleic acids. In addition, linoleic acid and linlolinic were the most prevalent unsaturated fatty acids, and it is the most important of the essential fatty acids. These results are in accordance with the data previously obtained [15,18].

All components are determined on dry weight.

Sensory attributes

Sensory evaluation scores of the beef with and without mustard powder shown in table 2. In this table, color, smell, flavor, consistency and over all acceptability of grilled meat slice samples are shown as affected by the different concentrations of yellow mustard powder (0.00%, 0.5%, 1.0%, 1.5%, 2.00% and 2.50%) and testifier samples. Along with the increase in mustard content from 0% to 2.0%, all characteristics of sensory evaluation score improved considerably from 3.08 to 4.94. According to data, the sensory attributes has highly significant effects on smell of grilled meat slices were scored at 2.0% level of mustard powder. This result indicated to benefit of added yellow mustard as the strong flavoring component of meat slices. With the increase of mustard powder by 2.0%, the mean of flavors core increased to 4.94. The application of heating treatment in grilled meat slices led into myrosinase enzyme activation, isothiocyanate reduction and thus reduction of pungent flavor in mustard powder. The results were not in line with the findings of Cserhalmi et al. [13], Ildiko et al. and [18], Milani et al. [19]. They stated that, mayonnaise, containing mustard powder gave a higher smell in comparison with the samples containing mustard powder and control sample. They explained that in higher concentrations of the yellow mustard powder this proliferation causes a pungent flavor in mayonnaise. It was a result of an increase in the content of isothiocyanate, following the activity of myrosinase enzyme in mustard powder. So use of heating treatment and the production of mustard powder improve the smell of final product.

Influence of mustard powder on antimicrobial loading activities

From the obtained results in figure 1, fresh meat was seasoning with mustard flour at 1.5 and 2.0% levels, it was able to reduce the natural flora to undetectable levels until two days of storage at different temperatures, while the control sample spoilage after 24 h at 30°C. It is clearly from this study, when adding mustard powder to fresh meat slices; this preserved it from contamination and reduced the natural microflora for 2 days before cooked, at any temperature. This finding is in mutual and good agreement with Milani et al. [19], they reported that the increase in amount of mustard powder in mayonnaise leads into decrease in microbial population as compare as to control sample. It showed a decrease in microbial population with 68% in mayonnaise that containing 1.5% mustard powder. Also, Nadarajah et al. [20] concluded that, the natural anaerobic microflora in meat treated with 10% mustard powder was significantly lower on days 3, 12 and 21 storage as compared to control sample.

The antimicrobial effects of mustard powder on the each E.coli or S.aureus when inoculated at 3.6 Log cfu/g in meat slices before grilled (as shown in figure 2). Mustard powder 1.5 and 2% levels were able to reduce E.coli number to uncountable levels at zero time and till 3 days at 4°C. The same effect was scored by mustard powder at 2% level against S.aureus. Meanwhile, used low initial 3 log cfu/gm of E.coli O157:H7 was reduced to undetectable level after 18, 12 and 3 days with 5, 10, 20% mustard flour the ground beef [21]. They also concluded that it is possible to use mustard powder at levels of >5-10% to eliminate E.coli O157:H7 in fresh ground beef [21]. Inoculated 7.5 log cfu/g of E.coli with 4.4% (W/W) deodorized mustard powder was surface applied and monitored 80 days. At 21 days bacteria was reduced by 3 log cfu/g as compared to control sample to only a 1 log cfu/g were reduction from cells [19]. They were summarized that, the higher concentration of yellow mustard, led to less the microbial population and the longer the shelf life of mayonnaise. At this present study cells of S.aureus were less significant affect by mustard powder at 1.5% level than E.coli, and it was showed that it reduced in their number by 1 log cfu/gm within 2 days at 4°C. It is similarity to the study by Mohamed Esa [22] who found the good antibacterial effect from mustard against S.aureus. Meanwhile, gram-positive bacteria of S.aureus was found to be less susceptible to mustard powder in meat than E.coli. These results are not accordance with findings of other investigations [23], who pointed that, the gram-positive bacteria of S.aureus was found to be more susceptible to spice samples, and explained this due to their structural features, are more susceptible to phenolic compounds than gram negative bacteria.

pH, TBA and TVN values

As well as, the results of pH, TBN and TVN measurement are showed in tables 3-5. The pH in grilled meat slices inoculated with E.coli was ranged from 5.9 to 6.2 at 4°C and 30°C were with 1.5% and 2% levels of mustard Powder. These results were not significant difference (P<0.05) than control sample. These results nearly agree with the results were scored by Shedeed [24], with value 6.10, and with value of 6.15 [25]. The lowest pH was revealed in grilled slices at 4°C treated with 1.5, 2% mustard powder till 6 days of storage and reached to 5.3, except samples kept at 30°C were spoilage after 6 days were shown in table 5. The decrease in pH value may be attributed to the breakdown of glycogen with the formation of lactic acid and, Poultry meat with a pH below 5.8 had a pale color. In conclusion mustard powder 1.5 and 2% levels used to keep the pH of grilled in ideal state till 6 days storage at 4°C. This result could be used also if the meat was exposed to infect with pathogens. At this study, samples were treated by Staph. aureus plus mustard powder shown the idea pH ranged from(6.0-6.3) except, samples kept at 30°C were increase in pH (6.2-6.7) during the storage time. The increase of pH may be due to the partial proteolysis However, the ideal pH for meat is between 5.8 and 6.3 [26]. The meat with higher pH had dark color and has a great risk on human health. The TBA was lowest significant value ranged from 0.22 to 0.62 after 3 day of incubation at 30°C and 4°C; this result was the same obtained result from control samples. While the TBA value 2.5-1.9 were scored level higher than ideal value in grilled meat without any treatment. Moreover, TBA (mg%) in the grilled meat slices were decreased to the lowest significant value (0.62) at 2% mustard powder, 30°C and 4°C till 6 days as compare to control sample (1.6). On the other hand, lower results were scored by Afifi-Jehan and Youssef Fatma [25,27] were ranged 0.119 mg and % 0.09 mg% respectively. The oxidative rancidity in meat was evaluated by measuring malonaldehyde in fat meat with an improved thiobarbituric acid (TBA) assay with antioxidant protection [28]. Value of TVN (mg%) in grilled meat slices treated with 2% mustard powder were decreased at different temperature. Furthermore, sample with 2% mustard powder kept at 4°C and inoculated with E.coli has low TVN value ranged from 5.2, 7.3 after storage at 3, 6 days respectively. Higher results were obtained by Afifi-Jehan and Youssef Fatma [25,27] with TVN value of 9.11 and 13.87 (mg%). Ammonia is one of the most spoilage end products in contaminated meat; it is an indicator for amino acid degradation by bacteria. So, it is directly pointer for spoilage odors and flavors [9,29-31]. The grilled meat without seasoning by mustard powder showed highly significant increase in physical properties after 3days of storage, and spoilage after 6 days [10,12,24,32,33].


From the results of the present work, it can be concluded that mustard powder at 1.5 and 2.0% levels possessed good antimicrobial activity against natural microflora present in fresh meat, and reduced bacteria to undetectable levels until two days of storage at different temperatures, while the testifier sample was spoilage after 24 h at 30°C. Moreover, at 1.5 and 2% levels from mustard powder were able to reduce E.coli number to uncountable levels at zero time and till 3 days of storage at 4°C, the same effect was scored by mustard powder 2% level against Staph.aureus.


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