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Home > Physicochemical and Functional Behavior of Pulses and Legumes in Dough Formation and its Impact on Nutraceutical Product Development

Physicochemical and Functional Behavior of Pulses and Legumes in Dough Formation and its Impact on Nutraceutical Product Development

Thesis Info

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External Link

Author

Seema Ashraf

Program

PhD

Institute

University of Karachi

City

Karachi

Province

Sindh

Country

Pakistan

Thesis Completing Year

2016

Thesis Completion Status

Completed

Subject

Food Science & Technology

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/13444/1/Seema_Ashraf.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726898014

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The research work presented in this dissertation is based on the Physicochemical and functional behavior of pulses and legumes in dough formulation. Pulses and legume has impact on nutraceutical product development especially with reference to their diverse bioactivities and impact on nutritional status of processed foods. Moreover the isolation of different proteinous compounds from selected lentils, beans and rice bran assayed for its biological activities. These isolated compounds are medicinally important as a part showing many health promoting activities and especially restricts the level of serum markers to show the activity of liver functioning. Rice bran oil tested on wistar rats showed highly promising results in controlling inflammation and arthritis while Microwave and oven heat treated Black cumin seeds (Kalonji seeds (Nigella Sativa) studied for its physical and biochemical change in protein molecules and enzymatic activities. The effect of new emerging technologies frequently used in daily life such as microwave heating on some of the physiological functions of foods. The current studies show that red bean, wheat and haleem wheat flours may be used in food formulation requiring high emulsion capacity, and are more suitable for the development of food products with increased water retention foaming capacity. Fat is one of the basic ingredients in the bakery products inducing a number of functional properties for providing acceptable texture and flavor. However, fat replacement is a challenge for the food processors, in order to meet the demand of "Low Caloric Foods" by the health conscious peoples who are constantly increasing in number. We therefore substituted lentil powder of mesh size 80 um in 10-50 % concentrations which was presoaked in water at 90 °C for 15 minutes to make the texture of the biscuits soft and to replace equivalent amount of fat in wheat flour. The lentil substituted biscuits consisting low calories with increased proteins, fibers and iron contents show appealing sensory score, without any significant adverse effect on taste, aroma or the texture. In the current study second formulation for Fat replacement largely focused on the two major by products rice bran (RB) and broken rice powder (BRP) of milling industry. The known percentages of rice bran (RB) and broken rice powder (BRP) were mixed separately with wheat flour to replace the quantity of fat as 10 %, 20 %, 30 % in case of RB while 10 % and 50 % for BRP. The results show that mixing and baking behaviours are strongly linked to the enzyme treatment and the particle size of rice products. It seems that the induced hardness due to reduction of fat may be eliminated by manipulating the certain ingredients such as the RB, BRP and the added water, also by altering some techniques as mixing time etc. The results are promising and elaborate the competency of rice bran and broken rice as an excellent economical and health stimulating, future candidates for fat replacement in the soft-dough biscuits. The resulting product is nutritionally superior as the caloric values were reduced, the nutritive indexes of various nutrients were raised and cost also reduced approximately up to 10 %. The Gravimetric-Enzymatic method was used for the quantification of the insoluble dietary fibers from three different lentils such as Spanish pardina (black pulse), lens culinaris (orange pulse) and Phasleolus aureus (yellow pulse). Lens culinaris resulted highest insoluble dietary fiber content as compare to other raw lentils. It is clearly appeared that lentils are rich source for insoluble as well as soluble dietary fiber. On comparing yield of dietary fiber from raw lentils and protease enzyme treated lentils seen that an increase in (%) yield of dietary fiber especially in case of two lentils, Spanish pardina and Lens culinaris. Different fraction of protein isolated from Lens cullinaris (red lentils) as glutelin-2 and glutelin-1 split red lentils as prolamin and globulin, split green gram as globulin and prolamin and split bengal gram as glutelin-2 that assayed for the amylase enzyme. These fractions have found high amylases activity on agar plate. That’s why lentil has capability to enhance the digestive activity in gut by acting more carbohydrate digestion. Reactive oxygen species (ROS) generated in body as part of normal defensive body mechanism for disease prevention. Natural ROS scavengers in body are formed to maintain the oxidant and antioxidant balance. The chemiluminescence has revealed that rice bran and red lentil proteins such as globuline, gluteline and prolamine posses significant immunomodulating activity and results have demonstrated that these protein fractions have moderate inhibitory potential on oxidative burst response of Whole Blood, polymorph nuclear cells and mouse macrophages. Spanish paridina, Red bean, lens culinaris and Phasleolus aureus based diet formulated and tested on wistar rats for management of hepatotoxicity that induced by Acetaminophen. Hepatotoxicity in liver can easily observe by elevated levels of serum markers such as Glutamate oxaloacetate transaminase (GOT), Glutamate Pyruvate Transaminase (GPT), Alkaline Phosphatase (ALP), Total Protein (TP), Biluribin Direct (BD), Low Density lipoprotein (LDL) and High density lipoprotein (HDL) etc. All formulated feed sample acted as significant reduction in the level of serum markers as compared to the positive control groups. The effects of microwave and conventional heat treatments at three temperatures (50, 100 and 150 ˚C) applied on Nigella Sativa (Black Seed). Damages on Protein molecule investigated by the electrophoresis on SDS PAGE against standard protein marker as well as the enzymatic activity of microwave and oven treated samples of black seed for enzyme amylase on agar plate. Results indicating that control sample has significant amylolytic activity but high temperature treatment in oven cause the complete loss of amylase activity while microwave treatment slightly effect amylase activity.
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پروفیسردُنٹ

پروفیسر دُنٹ

            ماہ گزشتہ کا ایک اہم علمی حادثہ جرمنی کے نامور پروفیسر دُنٹ کی وفات ہے، پروفیسر موصوف فن نفسیات (سائیکولوجی) میں اس وقت استاذ الاساتذہ کا مرتبہ رکھتے تھے، ان کے زمانہ سے پیشتر نفسیات کو عام فلسفہ کی ایک شاخ سمجھا جاتا تھا، دنٹ ہی نے سب سے پہلے یہ بتایا کہ نفسیات بذات خود ایک مستقل فن ہے، جس کے نتائج کی بنیاد قیاس و استدلال پر نہیں بلکہ تجربات و اخبارت پر ہے، چنانچہ سب سے اول انہیں نے نفسیات کے لیے معمل (تجربہ گاہ) قائم کیا، جس میں مادی علوم کے معلموں کی طرح سارا کام تجربات کی مدد سے انجام پانے لگا اور ایک جدید فن نفسیات طبیعی (سائیکو فزکس) کی بنا ڈالی، اس کے علاوہ فلسفہ و اخلاق، منطق وغیرہ پر بھی ان کی گراں پایہ و ضخیم تصانیف ہیں، ابتداً وہ وجود روح کے منکر اور مادیت کے پیرو تھے، لیکن رفتہ رفتہ روح کے قائل اور بالآخر سخت مذہبی آدمی ہوگئے تھے، وفات کے بعد ان کی عمر ۸۸ سال سے متجاوز تھی۔ (سید سليمان ندوی،اکتوبر ۱۹۲۰ء)

 

Preferences of Filipino and Foreign College Students Towards Online Translation Tools

Technological advancement makes translation convenient due to the emergence of various translation tools. This Explanatory-Sequential study aims to determine the preference and the factors affecting the preference of Filipino and Foreign college students toward the Online Translation Tool. Likewise, it also aimed to identify if there is a significant difference between the respondents' choices. To acquire the data, the researchers used a survey conducted on 15 Filipino and foreign collegiate students enrolled in universities in Manila and a focus group discussion among 3 Filipino students. The transcribed data were analyzed using Thematic Analysis. Moreover, the results of the quantitative data revealed that Google Translate was the preferred Online Translation Tool of Filipino and Foreign students for the reason of accessibility, user-friendliness, and the tendency of users to brand bias. The reasons presented in quantitative data are strengthened by the themes identified in the qualitative data. The three prevailing themes of Brand Bias, Accessibility, and Accuracy constituted the central theme of User Friendliness. It was identified through the Chi-Square Test that there is no significant difference among respondents' preferences (0.345 P-Value) toward online Translation software.

Studies on Fungal Skin Diseases Caused by Dermatophytes in Karachi Region.

Microsporum, Trichophyton and Epidermophyton are organisms termed as dermatophytes, which are responsible to cause dermatophytosis. They are the pathogenic associates of the keratinophilic (digesting keratin) fungi. Generally, they grow only in keratinized tissues such as hair, nails and the outer layer of skin, to invade them; the fungus frequently halts spreading where it comes in contact to living cells or areas of inflammation. Dematophytosis the most frequent human infectious diseases have become a stern medical and social problem and encountered all over the world. The rate of work, on dermatophyte infections, is limited as compared to the extensive work being done in the field of bacteriology, virology and mycology. In Karachi region, so far no extensive work has been carried out on the spread of different skin ailments caused by fungi and their influence on human health. During the sampling period, various fungi were collected and isolated from the affected specimens (skin, hairs, foot and nails) from different hospitals of Karachi and identified as Trichophyton rubrum, T. violaceum, T. verrucosum, T. mentagrophytes, T. tonsurans, T. interdigitale, Epidermophyton floccosum, Microsporum gypseum and M. canis. In the present studies five common epidemics were selected these were Tinea corporis (glabrous skin), Tinea capitis (scalp and hairs), Tinea pedis (foot), Tinea cruris (groin area) and Tinea unguium (nails) and found infected by different pathogenic dermatophyte fungi. This work was based on questionnaires. Epidemics showed different pattern of severity in different districts. In spite of this the severity described their viable effectiveness by the significant grouping in epidemics for five different areas such as East, West, South, Central and miscellaneous with decreasing order, respectively. In general, in all five areas Tinea corporis and Tinea capitis were significantly high in their distribution, while the occurrence of Tinea pedis, Tinea cruris and Tinea unguium had lesser incidence. Moreover, associations of these epidemics were determined by cluster analysis. Age and gender were the main categories considered in relation to the different epidemics investigated in the five selected districts of Karachi. For the determination of significant differences in age and gender, a factorial analysis of variance was employed on the data. The findings showed highly significant differences among age groups and sex at four out of five districts while sex did not show any difference in West as well as in the combined Studies on the fungal skin diseases caused by dermatophytes in Karachi region 2 data. At all five districts, male patients had considerably suspected by fungal infection especially Tinea corporis, Tinea cruris and Tinea pedis in contrast to females. Based on general correlation, its observed that dermatophytic fungal infections are more common infection in adult as compared to pediatric population. It was also noticed that the intensity of these infections is more frequent which is low socio economically class and live in unhygienic conditions. On the basis of frequency of isolated dermatophyte mean values of Trichophyton rubrum, T. violaceum T. verrucosum, T. mentagrophytes, T. tonsurans, T. interdigitale, Epidermophyton floccosum and Microsporum gypseum were highly distributed fungal species in four selected epidemics recorded from Karachi, while M. canis was only recorded from Tinea capitis whereas T. rubrum and T. violaceum were the dominant fungal species. The effects of antagonistic fungi on the growth of six pathogenic dermatophyte fungi were carried out. Among these isolates, Trichoderma harzanium and Aspergillus niger showed most promising results as exciting antagonists which inhibiting the growth of the pathogenic dermatophyte fungi by 72.9 and 61.2% individually. Concerning other, the least antagonist was Penicillium commune, inhibited the growth of the pathogens by 45.5%. The consequences of ANOVA demonstrated that all the isolates in the study significantly inhibited all the six fungal species including T. rubrum, T. tonsurans, T. verrucosum, T. mentagrophytes, T. violaceum and E. floccosum to varying degree. Each of the six species demonstrated as interacted with various infectious pathogens. All the tested bacterial strains in the study showed varying degree of antagonistic effect against all pathogenic dermatophytic fungi viz., T. rubrum, T. tonsurans, T. verrucosum, T. mentagrophytes, T. violaceum and E. floccosum. In this probationary, against all tested fungi Pseudomonas aeruginosa revealed highest antifungal activity by 67.5%. The least antagonists were P. fluorescence and Bacillus subtilis which inhibited the growth of the pathogen by 58.3 and 51.4%, respectively. Moreover, the results obtained from this study revealed that there was a momentous difference among the bacterial antagonistic activities against each and every fungus. Studies on the fungal skin diseases caused by dermatophytes in Karachi region 3 In antifungal test, the extracts of seven selected plants were tested against six fungi viz., T. rubrum, T. violaceum T. verrucosum, T. mentagrophytes, T. tonsurans and E. floccosum. Maximum inhibition activities were recorded in T. rubrum against all extracts of selected plants. However, some plant extracts did show less inhibitory activity against other five pathogenic dermatophytic fungi viz., T. violaceum T. verrucosum, T. mentagrophytes, T. tonsurans and E. floccosum. It was determined that Caesalpinia bonducella extract showed most promising antifungal activity against different dermatophytes by 71%. Moderate activity was recorded contrary to different dermatophytes by using Allium sativum, Cymbopogan citratus, Ocimum sanctum, Aloe barbadensis and Allium cepa by 68 to 58%. Minimum activity was recorded for Punica granatum i.e. 52%. For evaluating the efficacy of the frequently used antifungal drugs such as Terbinafine, Itraconazole, Clotrimazole, Ketaconazole, Griseofulvin and Fluconazole, was compared with the selected fungi, bacteria and extract of plants which inhibited significantly the growth of pathogenic dermatophyte fungi. It is concluded that six fungi T. rubrum, T. tonsurans, T. verrucosum, T. mentagrophytes, T. violaceum and E. floccosum were tested against the selected six antifungal drugs. All the selected drugs strongly suppressed the mycelial growth of T. rubrum. However, some antifungal drugs showed moderate and poor inhibitory activity against other pathogenic dermatophyte fungi. Regarding the data, present study revealed that Terbinafine by 81% was the most effective antifungal drug followed by Itraconazole, Clotrimazole, Ketaconazole and Griseofulvin by 69%, 63%, 52% and 42%, respectively which exhibited good activity against dermatophyte fungi and Fluconazole showed poorest activity by 19%. For the investigations regarding to correlate the data, comparison has been done between the consequences of antifungal drugs, antagonistic fungi, bacterial strains and medicinal plant extracts it was found that the plant extracts had extreme antidermatophytic effects by 62.1% as compared to the tested fungi, bacterial strains and antifungal drugs by 60, 59 and 54.3%, respectively. It is concluded that measures for anticipation should be done by the conservation of resistance not only to dermatophytic but other infections by personal Studies on the fungal skin diseases caused by dermatophytes in Karachi region 4 care and hygiene as well as try for improving sanitary conditions for public health. Much detailed in vitro or in vivo clinical analysis should be essential to explicate the particular antifungal mechanism shown by tested fungi, bacterial strains and medicinal plant extracts for establishing cheaper, affordable and acceptable products for future use.