Search or add a thesis

Advanced Search (Beta)
Home > Development, Characterization and Shelf Life Optimization of a Prototype Nutrient Dense Food Bar

Development, Characterization and Shelf Life Optimization of a Prototype Nutrient Dense Food Bar

Thesis Info

Access Option

External Link

Author

Tarar, Omer Mukhtar

Program

PhD

Institute

University of Agriculture

City

Faisalabad

Province

Punjab

Country

Pakistan

Thesis Completing Year

2009

Thesis Completion Status

Completed

Subject

Applied Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/handle/123456789/34

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676725895703

Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

Join our Whatsapp Channel to get regular updates.

Similar


The Indian vetch (Lathyrus sativus L.) and chickpea (Cicer aritenum) were selected for nutritional profile augmentation of food bars. Various processing techniques were used to reduce antinutritional factors in these legumes. The prepared bars were characterized for their nutritional quality attributes. Different antioxidant extracts were screened for their antioxidant activity. Response Surface Methodology (RSM) was used to optimize their levels in nutrient dense food bar during four months storage. The natural fermentation decreased crude protein level of legumes during processing, however other main constituents i.e. crude fat, total ash and crude fiber were least affected. The antinutritional factors i.e. trypsin inhibitors, tannins, polyphenols, phytates and β-ODAP (in Indian vetch only) were reduced effectively by fermentation and germination processes. The HClextractability (an index of bioavailability) of minerals in processed and raw Indian vetch and chickpea flours varied considerably in all cases. The processing treatments inserted positive influence over this. As part of criteria for selection of best treatment for nutrient dense food bar making, in-vitro protein and starch digestibilities, sensory characteristics, proximate composition and calorific value were analysed. In-vitro protein digestibility (IVPAD) and in-vitro starch digestibility (IVSD) for nutrient dense food bars were improved by the incorporation of processed Indian vetch and chickpea flours. All of the sensory attributes especially flavor, taste and overall acceptability deteriorated on the incorporation of natural fermented flour in food bars, whereas controlled fermented flour containing bars were preferred. The proximate composition data showed that bars with Indian vetch flour contributed high portion of crude protein and fat, whereas chickpea bars contributed marginally less. This investigation showed that these food bars are calorific dense as well by the virtue of their rich nutrient levels. The processed flours were thereafter blended with other protein sources to produce balanced protein meal. The protein quality of these diets was assessed by implying in-vivo rat assays. The values for relative protein efficiency ratio (RPER) and relative net protein ratio (RNPR) in close proximity to each other for processed meals acted as an indicator for good protein quality of these meals. The food bar meals showed significant variation among samples for isoleucine and sulfur containing amino acids i.e. methionine and cysteine. High contents of these amino acids were studied in meals carrying chickpea flours. When this amino acid profile was compared with amino acid requirement criteria for 2-5 years old children, it matched well. High TPD was achieved by food bars carrying controlled fermented Indian vetch and chickpea flour meals, followed closely by germinated flour possessing meals. The computed PDCAAS value was 1 for aforementioned meals. Food processing waste materials were extracted using different solvents and ethanol 80% solution in water was found effective in extracting all materials. Higher values of total polyphenol content were achieved by pomegranate peel among all solvent extracts, whereas DPPH scavenging and β-carotene bleaching capacities was also much better in pomegranate peel extracts than extracts from other materials. Then food bars were prepared taking into account the best formulation, incorporating Emblica officinalis extract, Punica granatum peel extract and citric acid at different levels for shelf stability of nutrient dense food bar. The second-order polynomial models were fitted well for independent variables on storage data at various intervals. It was observed that the optimized levels of Emblica officinalis (1.05%), Punica granatum extract (1.86%) and citric acid (0.059%) in food bar formulation generated through using Response Surface Methodology, resulted in sensory acceptable and shelf stable nutrient dense food bars.
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

82. Al-Infitar/Tearing Apart

82. Al-Infitar/Tearing Apart

I/We start by the Blessed Name of Allah

The Immensely Merciful to all, The Infinitely Compassionate to everyone.

82:01
a. The time when the celestial realm will tear apart,

82:02
a. and when the stars/planets will scatter and begin to fall off,

82:03
a. and when the seas/oceans will be made to burst by massive earthquakes and cause a series
of tsunami floods,

82:04
a. and when the graves will be overturned with their burdens of lifeless human bodies,

82:05
a. then every person will know what it did of the good and evil and had sent forward and what it had left behind.

82:06
a. O The People!
b. What is it that lured you away to disbelief from your Gracious Rabb - The Lord in spite of HIS Graciousness and Generosity?

82:07
a. HE is the One WHO created you out of nothingness and without a precedence,
b. then shaped you and proportioned you,

82:08
a. and shaped you in whatever form HE pleased,
b. and configured your composition accordingly.

82:09
a. But no!
b. Even then you deny and belie the reality of the Time of Final Judgment.

82:10
a. You do so while there are ever-watchful angels over you, recording your deeds, speech and dealings,

Surah 82 * Al-Infitar 719

82:11
a. - noble, honorable recorders,

82:12
a. aware of exactly whatever you do and whatever you did.

82:13
a. And, indeed, the righteous will be in bliss of Paradise,

82:14

الفكر السياسي الإسلامي وتطوره من الشورى إلى الديمقراطية

There has been a tussle going on between Islam and democracy for many decades in the Muslim world which has benefited most certainly the anarchic factions like kings, lords and army dictators. Though democracy is close to Islam and thought to be the best of all types of governments as majority is authority in it that may make or mar the government. In a democratic setup, the individual and personal rights and freedom are considered which is why it is preferred more these days. Many as Muslim thinkers are also in favor of it, but still there is a large faction of clerical scholars who deem democracy as the root of all evils since it empowers general public as an authoritative and decisive force. However with the passage of time, the Islamic counseling system has evolved and come very close to the spirit of democracy. Therefore, may contemporary scholars hold Islamic counseling and democracy almost similar. This article aims to present a preview of democracy and counseling in the light of what the Ulema (Scholars) say about it.

Phytochemical and Biological Investigation of Thymus Linearis

The crude methanolic extract of Thymus linearis and its fractions were analyzed for their antibacterial and antifungal activities. They exhibited significant antibacterial activity against MDR bacterial strains. The maximum effect was shown by butanolic fraction against S.aureus, K. pneumoniae and Providencia species. The crude methanolic extract and other fractions exhibited low to moderate antibacterial activity. Similarly crude methanolic extract and its various fractions were analyzed for antifungal activity. The crude extract showed good activity against Rhizopus (14mm), Penicillium chrysogenum (10mm) and Aspergillus fumigates (10mm) respectively, while chloroform fraction showed no effect against Rhizopus. The n-hexane fraction showed low to moderate activity against Penicillium chrysogenum. The crude methanolic extract and its various fractions were analyzed for their phytotoxic effect. The phytotoxicity of butanolic fraction was significant, while moderate activity shown by crude methanolic extract, ethyl acetate and chloroform fractions of T. linearis. In in-vitro contact bioassay the n-hexane and butanolic fraction exhibited significant activity resulting 60% mortality of T. casteneum while methanolic fraction exhibited about 40% and 30% mortality of T. casteneum and C.analis respectively. The anthelmintic effect of crude methanolic extract and its solvent fractions showed significant results. The n-hexane and ethyl acetate fraction showed more significant anthelmintic activity, while methanol, chloroform and butanol fractions showed mild to moderate activity against Pheretima posthumas. The crude methanolic extract and its various fractions exhibited a concentration dependent antioxidant effect. The crude extract possessed similar antioxidant effect to that of ascorbic acid, while the antioxidant potential of n-hexane, butanol and chloroform were comparable to that of Butylated hydroxytoluene (BHT). The ethyl acetate fraction showed lowest antioxidant activity. In in-vivo biological activities the crude methanolic extract and its various fractions were being very safe in acute toxicity assay. In analgesic activity the Thymus linearis methanolic extract (TLME) exhibited a dose dependent antinociceptive effect in both peripheral and central analgesic models. Similarly antipyretic effect of TLME was increased as the dose increased from 100 to 300mg/kg. The TLME showed significant antipyretic effect from 2nd hr up to 4th hr of experiment. The TLME, at the dose of 300mg/kg exhibited significant anti-inflammatory response 2hr after the carrageenan injection and sustained throughout the experiment. In nephro and hepato protective activity, the crude methanolic extract and its various fractions showed significant results, and n-butanol, chloroform and crude extract were more nephro and hepato protective while ethyl acetate fraction showed mild nephro and hepato protective activity. The Fourier transform infrared spectroscopy (FTIR) was done of crude methanolic extract and its various solvent fractions which suggested the presence of different new compounds like amides, aldehydes, carboxylic acid, ethers, alcohols and ketones etc, majority of which are not reported formally. Fixed oils were obtained from n-hexane sub-fraction and GC/MS of fixed oils showed presence of important fatty oils which are biologically active. The ethyl acetate and chloroform fraction were subjected to column chromatography (CC) which resulted into the isolation of six pure compounds. The structure elucidation of pure compounds was done using 1H-NMR, 13C-NMR, COSY, NOSY, HMQC, HMBC, UV, IR, EI-MS and HREI-MS. All the compounds were isolated from T. linearis for the first time but they were reported from other sources as well. These compounds were β-Sitosterol, Ursolic acid, 3, 4, 5- Trihydroxybenzoic acid, Oleanolic acid, Benzoic acid and Betulinic acid. The in-vivo and in-vitro biological activities were corresponding with these isolated pure compounds. The antipyretic, antinociceptive and anti-inflammatory activity of β- sitosterol, ursolic acid and oleanolic acid has already been recorded. The antioxidant and antitumor activity of ursolic acid and betulinic acid has also been reported as well. This research activity significantly supported ethnobotanical uses of T. linearis whole plant as a traditional medicine for treatment. In spite of all this further thorough research work on the crude methanolic extract and its various fractions for isolation of secondary metabolites is required. Furthermore research activities on isolated compounds may give directions for potential therapeutic agent for management of different disease.