3.1 PREFORMULION STUDIES:
3.1.1. IDENTIICAION OF DRUG:
Can I See Writer Credentials?
You can view anonymized writer profiles, highlighting their degrees and expertise, to feel confident in who is handling your paper. This transparency helps you choose the best fit for your needs. Each profile showcases years of experience and specialization areas for informed decision-making. Our team ensures every writer meets high academic standards. Assignment writer credentials include verified degrees and proven subject mastery.
Identification of drug was carried out by following methods.
Color: Yellowish white tobright yellow, crystals or crysalline powder.
Solubility: Slightly soluble in water, soluble in glacial acetic acid, slightly soluble or soluble in dichloromethane, slightly soluble in methanol.
Physical state: Solid
What If I Need Last-Minute Changes?
No problem! Request revisions anytime within 7 days, and we will tweak your paper quickly to meet your needs, free of charge. Our flexible process keeps your paper on track. Whether it is formatting adjustments or content refinements, we handle changes efficiently. Just update your order details in your account. Essay helper support ensures quick turnaround on modification requests without hassle.
Melting point: 250-257 0C, which was determied by capillary method.
3.1.2. SOLUBILITY STUDIES:
TABLE NO. 3.1: Solubility data of drug in different solvents:
Solvent Concentration (mg/ml) Solubility
Do You Handle Interdisciplinary Topics?
Yes, our writers with diverse expertise can blend fields like psychology and sociology, delivering cohesive papers for complex assignments. We ensure every angle is covered with precision. Cross-disciplinary research requires special skill in integrating multiple perspectives seamlessly. Share your topic details for a tailored approach. Ace my homework challenges involving multiple disciplines with our versatile academic team.
Methanol 5 Soluble
Distilled Water 5 Slightly soluble
Ether 5 Insoluble
0.1 N NaOH 5 Insoluble
Glacial acetic acid 5 Soluble
Dichloromethane 5 Slightly soluble
0.1N HCl 5 Soluble
3.1.3. LOSS ON DRYING:
TABLE NO. 3.2: Percentage loss on drying of Ofloxacin
S. No. Weight of drug before drying (gm) Weight of drug after drying (gm) Loss on drying
How Do You Define Originality?
Originality means crafting every paper from scratch, with unique content and proper citations, verified by plagiarism checks for 95%+ uniqueness. You will receive a free originality report with every order. Our zero-tolerance policy for copied content ensures your paper is academically authentic. We guarantee your paper is one-of-a-kind. Paper writing excellence demands complete originality in every sentence we produce.
(%w/w) Average LOD (%w/w) Limits
1 1 0.9974 0.26 0.27 0.1-0.4
2 1 0.9972 0.28
?
3.1.4. DRUG-EXCIPIENT INTERACTION BY FTIR:
Can You Follow My Professors Unique Guidelines?
Absolutely! Share your professors rubric or specific instructions, and we will tailor the paper to meet every detail, no matter how unique. Our writers thrive on precision and customization. We have experience with unconventional requirements and specialized formatting across all disciplines. Upload your guidelines in the order form for best results. Research study bay professionals excel at interpreting and executing complex instructor specifications.
Fourier transform infrared spectroscopy:
FTIR is the most important analytical technique, to determine the structure of the compound, by predicting the presence of certain functional groups in the compound which can be observed at definite frequency and to study the drug polymer interaction.
The spectra were recorded for Ofloxacin, Sodium alginate, Guar gum, HPMC.
Fig. 1 FTIR spectra of pure drug Ofloxacin:
TABLE NO. 3.3: Peaks of Ofloxacin
Functional groups Peak range (cm-1 )
C-H bending 952.84
C-F 1051.20
-OH group 1400.32
Can You Provide Sample Papers?
Yes, we offer sample papers upon request to showcase our quality and style, helping you decide before placing an order. These samples reflect our commitment to excellence. Reviewing samples gives you insight into our writing standards and subject expertise. Contact support to view samples relevant to your needs. Ace tutors demonstrate their capabilities through high-quality example work across disciplines.
C=C stretching 1473.62
C=C bending 1519.91-1548.81
C=O group of acid 1718.58
C-H stretching 3041.74
FTIR spectra of polymer:
Sodium alginate
Fig. 2 FTIR spectra of sodium alginate
TABLE NO. 3.4: Peaks of Sodium alginate
Functional groups Peak range (cm-1 )
C-O-C stretching 1026.13
Symmetrical acid stretching 1404.18
Asymmetrical acid stretching 1622.13
O-H stretching 3396.64
?
FTIR spectra of guar gum:
Fig. 3 FTIR spectra of Guar gum
TABLE NO. 3.5: Peaks of Guar gum:
Functional groups Peak range (cm-1 )
C-H deformation 873.75
CH2twisting 1020.34-1087.85
CH2and C-OH symmetric deformation 1415.71
How Do I Specify My Requirements?
Use our order form to detail your topic, style, and any specific instructions, or upload files for your writer to follow precisely. Clear instructions ensure a perfect paper every time. The more details you provide, the better we can match your expectations and academic goals. Our support team can guide you if needed. Essay writer assignments benefit from comprehensive requirement descriptions in the initial order.
Ring stretching 1641.42
C-H stretching 2926.01
-OH group 3363.86
?
FTIR spectra of HPMC:
Fig. 4 FTIR spectra of HPMC
TABLE NO. 3.6: Peaks of HPMC:
Functional groups Peak range (cm-1 )
Pyranose asymmetrical 945.12
C-O-C vibration 1064.71-1118.71
C-O-C symmetrical 1377.17
O-CH3asymmetricbending 1460.11
C-O stretching 1645.28
-OH group 3454.51
?
Are Your Writers Native English Speakers?
Many are native speakers, and all are fluent, passing strict language tests to ensure clear, professional writing for your papers. This guarantees polished, high-quality work. Our language proficiency standards ensure flawless grammar and natural academic expression. You can request a native speaker if preferred. My assignment help comes from linguistically skilled professionals who master academic English.
FTIR spectra of combination of drug and polymer:
Fig. 5 FTIR spectra of combination of drug and polymer
TABLE NO. 3.7: Peaks of combination of drug and polymer
Functional groups Peak range (cm-1 )
OH bonding 1020.34
C-O-C vibration 1118.71
C-O-C symmetrical 1280.73
C-H stretching 1429.25
Symmetrical stretching of O-C-O of acid 1627.92
Can You Help with Literature Reviews?
Definitely! Our writers craft comprehensive literature reviews, synthesizing sources to support your research with clarity and depth. We ensure every source is relevant and properly cited. Literature reviews require critical analysis and thematic organization that our experts deliver consistently. Just provide your topic or sources to get started. Research essay service includes meticulous literature synthesis for scholarly credibility.
Hydrogen bonded OH 3431.36-3523.95
Free OH 3682.11
?
3.1.5 PREPARATION OF STANDARD CURVE IN 0.1NHCl & METHANOL:
Fig. 6. Standard curve of Ofloxacin in 0.1N HCl
Fig. 7. Standard curve of Ofloxacin in Methanol:
What Payment Methods Do You Accept?
We accept major credit cards, PayPal, and secure bank transfers, all processed through encrypted systems for your safety. Your financial security is our priority. Multiple payment options ensure convenience for students worldwide. Choose the method that works best for you at checkout. Essay helper services accommodate various payment preferences for global accessibility.
3.2. PHYSICOCHEMICAL CHARACTERIZATION:
3.2.1. PARTICLE SIZE DISTRIBUTION:
Particle size distribution and average particle size was determined microscopically.
TABLE NO. 3.8: Particle size distribution
How Do You Handle Group Projects?
We can write sections for group projects, ensuring consistency with your teams style and integrating seamlessly with other parts. Our writers collaborate to match your groups vision. Coordinated group work requires attention to unified tone and formatting standards. Upload any shared guidelines to keep everything aligned. Paper writing for collaborative assignments maintains cohesion across all contributed sections.
S. No. Formulation code Mean Particle size (µm)
1 F1 57.3 ± 7.6
2 F2 63.5 ± 7.98
3 F3 64.1 ± 7.99
4 F4 61.2 ± 7.52
Can You Assist with Grant Proposals?
Yes, our writers have experience crafting compelling grant proposals, tailored to meet funding requirements with persuasive arguments. We help you make a strong case for funding. Successful proposals require strategic narrative and evidence-based justification that we specialize in. Provide your guidelines, and we will deliver a winning proposal. Assignment writer expertise extends to professional grant writing with proven success rates.
5 F5 55.3 ± 7.39
6 F6 58.6 ± 7.52
7 F7 57.9 ± 7.46
8 F8 58.4 ± 7.51
9 F9 61.7 ± 7.55
What Is Your Turnaround for Editing?
Editing typically takes 24-48 hours, depending on paper length, with rush options available for faster delivery. We polish your work to perfection quickly. Our editors focus on enhancing academic tone while maintaining your original ideas and arguments. Upload your draft to start the process today. Assessment help through editing services delivers professional refinement on tight schedules.
?
3.2.2. MORPHOLOGY:
Morphology of alginate beads were observed by scanning electron microscopy (SEM). The shape and surface of particles are also important in terms of drug release.
Fig. No. 8. Scanning electron microscopy (SEM) of Formulation 1.
Can You Write for Non-Academic Purposes?
Success! We handle professional documents like reports or personal statements, customized to your goals and audience. Our versatile writers adapt to any context. From business reports to scholarship essays, we deliver professional-quality writing beyond academics. Just specify your needs in the order form. Ace my homework extends beyond coursework to career-focused writing projects.
?
Fig. No. 9. Scanning electron microscopy (SEM) of Formulation 2.
?
3.2.3. YIELD OR MICROPARTICLE RECOVERY:
The prepared alginate beads were dried under the vaccum. After proper drying the weight of the beads were measured and the yield was calculated from the following equation,
How Do You Ensure Writer Expertise?
Our writers are vetted for degrees and expertise, with ongoing evaluations to maintain high standards across all subjects. This ensures your paper is handled by a true professional. Regular quality audits and performance reviews keep our team at peak excellence. Trust us to match you with the right expert. Research study bay maintains rigorous quality control through continuous writer assessment.
% Yield = Weight of recovered particles x 100
Weigh of drug and polymer used
TABLE NO. 3.9: Percentage yield of different formulations:
S. No. Formulation Percentage yield
1 F1 31.69
2 F2 34.62
3 F3 30.53
4 F4 47.16
5 F5 46
Can I Request Unlimited Revisions?
We offer free revisions within 7 days; additional revisions are available at a small cost if needed beyond that period. Your satisfaction is our goal. Most students find our first delivery meets expectations, but we are flexible for perfectionism. Contact support to discuss any extra changes you need. Ace tutors remain committed to perfecting your work through reasonable revision requests.
6 F6 43.19
7 F7 32.05
8 F8 29
9 F9 29.41
3.2.4. DRUG ENTRAPMENT EFFICIENCY:
An accurately weighed quantity of dried beads were crushed in mortar and added to 100 ml of suitable solvent. After complete dissolution of the beads, the solution was filtered and analyzed spectrophotometrically. The percentage drug loading and entrapment efficiency was calculated.
What Is Included in Your Outlines?
Our outlines detail structure, key points, and sources, giving you a clear roadmap for your paper before writing begins. They are designed to keep your project focused and on track. A well-crafted outline serves as both planning tool and progress checkpoint. Request an outline with your order for added clarity. Essay writer planning includes comprehensive outlines that guide the entire writing process.
Drug entrapment efficiency = Weight of drug in alginate beads x 100 Weigh of drug used
?
TABLE NO. 3.10: Drug entrapment efficiency of different formulations:
S. No. Formulations Drug entrapment efficiency
1 F1 40.29
2 F2 44.16
3 F3 58.37
4 F4 47.42
Can You Handle Technical Writing?
Yes, our writers excel in technical fields like engineering or IT, producing precise, well-documented papers for specialized topics. We ensure accuracy and clarity in every technical detail. Complex technical concepts are explained clearly without sacrificing academic depth. Share your requirements for a tailored result. My assignment help covers specialized technical subjects with field-specific expertise.
5 F5 60.12
6 F6 56.34
7 F7 71.35
8 F8 69.31
9 F9 62.28
3.3 FLOATING PROPERTIES:
TABLE NO. 3.11: Floating properties of different formulations:
S. No. Formulations code Floating lag time Floating time
1 F1 < 30 sec > 24 hrs
2 F2 < 30 sec > 24 hrs
How Do You Support ESL Students?
We tailor papers to match your language proficiency, ensuring clarity and academic quality while supporting non-native English speakers. Our writers make complex ideas accessible. ESL students benefit from our culturally aware approach and clear academic language. Let us know your needs for a perfect fit. Research essay service accommodates international students with language-sensitive academic support.
3 F3 < 30 sec > 24 hrs
4 F4 < 30 sec > 24 hrs
5 F5 < 30 sec > 24 hrs
6 F6 < 30 sec > 24 hrs
7 F7 < 30 sec > 24 hrs
Can You Meet Tight Formatting Rules?
Absolutely! We adhere to any formatting guidelines, from margin sizes to heading styles, ensuring your paper meets all requirements. Precision is our promise. Even the most detailed formatting specifications are followed exactly as instructed. Upload your formatting guide to get it right. Essay helper professionals master intricate formatting requirements across all citation styles.
8 F8 < 30 sec > 24 hrs
9 F9 < 30 sec > 24 hrs
Floating ability of the prepared alginate beads was evaluated in 0.1N HCl and it was found that all the formulation floated immediately or with a very short lag time of about less than 30 second only. Similarly floating time of all the batches was about more than 24 hours. The results prove that all the batches have good floating property.
?
3.4 IN-VITRO DRUG RELEASE STUDY:
What Happens If I Am Not Satisfied?
If you are not happy, we offer free revisions within 7 days or a refund review to ensure you are fully satisfied with the outcome. Your peace of mind matters to us. We work collaboratively to address concerns and find solutions that meet your academic needs. Reach out to our support team to resolve any issues. Paper writing satisfaction remains guaranteed through our responsive resolution process.
Release of drug was performed on the beads by using dissolution apparatus USP type I. A weighed amount of individual beads formulation were added to the dissolution vessel, which contains sufficient amount of dissolution media at 370C. At set times, samples were collected, filtered and the amount of drug released was assayed by proper analytical technique.
TABLE NO. 3.12: Cumulative percentage of drug release:
Time
(hrs.) F1 F2 F3 F4 F5 F6 F7 F8 F9
Can You Help with Annotated Bibliographies?
Yes, we create detailed annotated bibliographies, summarizing sources and aligning with your citation style for academic precision. Each entry is concise and relevant. Annotated bibliographies require critical evaluation of sources alongside proper documentation. Provide your sources or let us find them for you. Assignment writer services include expertly crafted annotated bibliographies for research projects.
1 6.14 5.48 7.24 6.74 8.26 7.36 8.42 9.53 6.71
2 12.48 12.14 12.56 11.43 14.39 12.69 14.23 16.41 13.48
3 18.23 17.63 18.63 16.65 21.23 18.26 19.34 24.16 21.14
4 23.42 21.84 24.78 22.46 26.12 23.52 26.54 31.18 29.56
5 30.52 25.46 29.35 27.93 31.48 28.42 31.42 37.45 36.48
6 32.16 29.38 34.85 33.14 36.78 34.26 36.74 42.65 44.19
What Is the Shortest Deadline You Offer?
We can deliver quality papers in as little as 3 hours for urgent needs, with dedicated writers ensuring no drop in quality. Perfect for last-minute assignments. Our express service combines speed with excellence for emergency academic situations. Chat with support to confirm timing for your task. Assessment help remains available even for the most urgent deadlines without quality compromise.
7 35.68 33.42 40.09 38.56 42.86 39.78 42.34 49.23 51.75
8 40.27 38.65 43.28 42.64 46.72 44.65 47.13 54.26 57.64
9 42.61 43.12 46.42 47.26 51.48 50.12 53.71 61.28 64.28
10 45.32 47.52 51.49 52.83 55.61 57.48 58.45 66.35 70.42
22 54.12 56.24 61.48 63.08 63.75 66.71 67.14 74.26 81.36
23 63.65 67.49 69.26 71.65 71.32 72.64 75.78 82.56 86.12
24 72.28 74.58 76.12 77.42 72.68 78.84 81.36 86.34 92.43
?
3.5 RELEASE KINETICS EVALUATION:
By analyzing release kinetics mathematical models it is found that foe all formulations, the correlation coefficient, is highest in case of Higuchi kinetics. Therefore it can be said that the release follows Higuchi kinetics moreover the R2 value of zero order kinetics is higher than that of first order kinetics and it is near to that of Higuchi kinetics. Therefore release is following mixed kinetics or Higuchi kinetics.
Fig. no. 10: Zero order release kinetic model
Fig. no. 11: First order release kinetic model
?
Fig. no. 12: Higuchi release kinetic model
TABLE NO. 3.13: R2 values or correlation coefficient values of different formulations:
S. No. Formulation code Zero order release kinetics First order release kinetics Higuchi release kinetics
1 F1 0.8811 0.6425 0.9537
2 F2 0.9088 0.6774 0.9640
3 F3 0.8872 0.6637 0.9626
4 F4 0.8969 0.6793 0.9650
5 F5 0.8505 0.6406 0.9457
6 F6 0.8851 0.6790 0.9586
7 F7 0.8755 0.6726 0.9542
8 F8 0.8440 0.6361 0.9404
9 F9 0.8398 0.6012 0.9378
3.6 STABILITY STUDIES:
Prepared alginate beads were divided at different parts and were placed at different vials at different temperature and humidity for 90 days. The sample from different container was periodically evaluated for physical and chemical stability.
TABLE NO. 3.14: Stability data at 40¬¬oC and 75 % relative humidity
Duration Agglomeration Drug content (%) Drug release at 8 hours (%)
F2 F5 F8 F2 F5 F8 F2 F5 F8
30 days No change No change Agglom
eration 51.85 55.23 52.84 71.67 74.07 73.19
60 days Agglom
eration No change Damage 50.64 52.07 _ 69.82 73.52 _
90 days Damage No change Damage _ 51.16 _ _ 69.27 _
From the above table of stability data is clear that, microparticles are not proper stable at this stability condition. There is no further change in the formulation F5 for agglomeration, but F2 and F8 ¬ agglomerate after a definite period of time and finally damage, which shows that they are unstable. Drug content and drug release also decreases, after a definite period of time for all selected formulations.
?
CONCLUSION
In the present research work, floating beads of Ofloxacin were formulated to achieve sustain release of drug in the absorption window if gastrointestinal tract The sodium alginate beads were prepared with Guar gum and Hydroxy Propyl Methyl Cellulose, showed better loading and floating characteristics. In this work, spherically well shaped microbeads were produced using the polymers guar gum and Hydroxy propyl methyl cellulose. Preformulation studies of drug were attempted regarding melting point, solubiliy analysis, UV spectrophotometric analysis and FTIR analysis to identify and assesment of purity of drug. The recovered microbeads were evaluated for particle size analysis, drug entrapment efficiency, percentage yield, FTIR study, morphology, in-vitro drug release study and release kinetic evaluation.
In-vitro drug release study from every formulation was conducted for 24 hours. The release data were further analyzed to curve fitting into mathematical model, which shows that drug release kinetics follow Higuchi kinetics mathematical model.
Preformulation study revealed the purity of drug. The solubiliy of drug in methanol was found to be satisfactory to study the drug release into this media. UV-spectrophotometric analysis of drug into both 0.1N HCl and methanol revealed the suitability of the standard curve for further calculations. Average particle size of selective formulation was at the range of 55.3 µm 64.1 µm which shows that particles are smallee in size, which provide uniform distribution of drug release in thebody. From the above table of floating properties, it is clear that the all formulations floated immediately and with a very short lag time about less than 30 seconds. Similarly floating time of all the formulations is about more than 24 hours. This result proves that all the batches have good floating property.
The morphology of microbeads was determined by scanning electron microscopy, which shows that particles are nearly spherical in shape and with slightly rough surface, which may attribute to the uniform release of drug. Microparticles recovery was found to be 29 % to 47.16 % in all formulations, drug entrapment efficiency was at the range of 40.29 % to 71.35 % and drug release at 24 hours was found to be at the range of 72.28 % to 92.43 % in all formulations. These values ensure the high yield and entrapment efficiency of the microbeads. Moreover the release kinetics evaluation revealed that the formulation was following Higuchi Kinetic mathematical model.
From the result obtained, in drug release study we conducted that F9 formulation have higher percentage of drug release (92.43 %), and same formulation also have short lag time abut less than 30 seconds only and floating time is about more than 24 hours, which shows that it has good floating property or buoyancy. Therefore, we conclude that F9 formulation is the best formulation as compared to other formulations.
The data obtained from the current work suggest the possibility of using microparticles as a sustained release gastroretentive drug delivery system which has lower density than gastric fluids and so these remain floating in the stomach without affecting the gastric emptying rate for a prolonged period of time. For the purpose of future use, these floating sustain release gastroretentive microbeads are suitable drug delivery system for the treatment of microbial infection.
?