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Open research questions in Natural Products and Applications

48 unresolved questions extracted from the limitations and future-work sections of 542 Natural Products and Applications papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • There is limited research on the use of AB-Mix and POC in hydroponic wick systems for red spinach cultivation. There is a need to evaluate the effect of AB-Mix concentration and POC dosage on the growth and yield of red spinach.

    <b>Pertumbuhan dan Hasil Bayam Merah (<i>Amaranthus tricolor</i> L.) pada Hidroponik <i>Wick</i> dengan AB-Mix dan POC Air Cucian Beras</b> · 2026 · DOI

  • Further research is needed to evaluate the effect of other factors on the growth and yield of red spinach in hydroponic wick systems. Further research is needed to develop more efficient hydroponic wick systems for red spinach cultivation. Further research is needed to evaluate the economic feasibility of using hydroponic wick systems for red spinach cultivation.

    <b>Pertumbuhan dan Hasil Bayam Merah (<i>Amaranthus tricolor</i> L.) pada Hidroponik <i>Wick</i> dengan AB-Mix dan POC Air Cucian Beras</b> · 2026 · DOI

  • However, most glucomannan purification studies on porang (Amorphophallus muelleri Blume) have focused on optimizing individual processing stages, while the integrated effects of mechanical treatment, solvent selection, and drying methods remain insufficiently explored.

    OPTIMASI EKSTRAKSI LANGSUNG GLUKOMANAN DARI UMBI PORANG SEGAR (AMPHOPHALLUS MUELLERI BLUME) MENGGUNAKAN VARIASI KONSENTRASI ISOPROPANOL DAN TEKNIK PENGGILINGAN BERULANG · 2026 · DOI

  • The lack of documentation on the botanical wealth of Indonesia. The need for evaluation of the physicochemical properties and antioxidant activity of isotonic drinks formulated with yellow rope stem extract.

    Physicochemical and Antioxidant Activity Evaluation of Yellow Rope (Anamirta cocculus (L.) Wight & Arn.) Stem Extract Isotonic Drink · 2026 · DOI

  • The lack of research on the use of herbal ingredients in creating deodorant sprays. The need for more research on the potential of herbal ingredients in creating deodorants.

    Sosialisasi dan Pelatihan Pembuatan Deodoran Spray Untuk Mendorong Kewirausahaan Kosmetik Skala Rumah Tangga · 2026 · DOI

  • The study has a limited sample size. The study only evaluates the physical properties and SPF of the gel in vitro. The study does not compare the results with other sunscreen products.

    Formulasi Gel Tabir Surya Ekstrak Daun Ketapang (Terminalia Catappa L.) Terpurifikasi Dan Penentuan Nilai SPF · 2026 · DOI

  • There is a need for natural and effective sunscreens. The use of Terminalia catappa L. leaf extract as a photoprotector has not been fully explored.

    Formulasi Gel Tabir Surya Ekstrak Daun Ketapang (Terminalia Catappa L.) Terpurifikasi Dan Penentuan Nilai SPF · 2026 · DOI

  • The study identifies the need for regular water quality monitoring in Karaman, Turkey. The study highlights the importance of irrigation water quality for sustainable agriculture.

    Karaman İlinin Sulama Suyu Kalitesinin Belirlenmesi · 2026 · DOI

  • Future research should focus on the development of new green extraction techniques. The use of PLE should be explored for extracting other biologically active compounds from plant materials.

    Ubrzana ekstrakcija otapalom · 2026 · DOI

  • There is a need for the development of green extraction processes that reduce the negative impact on the environment. The paper identifies a gap in the literature regarding the evaluation of PLE in extracting phenolic compounds from berries.

    Ubrzana ekstrakcija otapalom · 2026 · DOI

  • The study is limited by the availability of sources, particularly biographical and autobiographical materials. The analysis relies on archival documents and lacks more personal accounts.

    Volõõnia sakslaste poliitiline integratsioon sõdadevahelises Eestis kodakondsuse taotlemise näitel · 2026 · DOI

  • The existing research on Baltic German identity has often overlooked the lower strata. There is a lack of studies on the naturalization process of Volõõnia Germans.

    Volõõnia sakslaste poliitiline integratsioon sõdadevahelises Eestis kodakondsuse taotlemise näitel · 2026 · DOI

  • The study has a limited sample size (n = 130). The paper relies on self-reported data from the questionnaire. The study does not provide a comprehensive analysis of the curriculum and practice gap.

    Keeleteadus ja kooligrammatika: Kas räägime samast keelest? · 2026 · DOI

  • Future research should investigate the impact of curriculum and instructional materials on student learning outcomes. The study suggests the need for ongoing professional development and support for teachers. Future research should explore the role of grammatical concepts in first language education in different contexts and languages.

    Keeleteadus ja kooligrammatika: Kas räägime samast keelest? · 2026 · DOI

  • Masalah produksi ASI yang tidak cukup masih menjadi masalah yang sering dialami oleh ibu nifas di Indonesia. Kurangnya intervensi non-farmakologis yang efektif untuk meningkatkan produksi ASI.

    Pengaruh Aromatherapy Lavender dan Pijat Oksitosin terhadap Peningkatan ASI Pada Ibu Nifas · 2026 · DOI

  • There is a need to improve the functional properties of tapioca starch. The current modification methods have limitations and there is a need for new approaches.

    STUDI AWAL SINTESIS PRODUK PATI TAPIOKA YANG MENGEMBANG DALAM AIR DINGIN (GRANULAR COLD WATER SWELLING STARCH): PENGARUH KOMPOSISI ETHANOL DAN KONSENTRASI AWAL PATI · 2026 · DOI

  • An'anaviy ftoridli birikmalar faqat yuzaki florapatit qatlamini hosil qiladi va chuqur mineral yo'qotishlarni tiklay olmaydi. Tish kariesi boshlang'ich bosqichida invaziv aralashuvlarsiz kimyoviy-terapevtik yo'l bilan qayta tiklash muammosi mavjud.

    KARIES PROFILAKTIKASIDA REMINERALIZATSIYALOVCHI NANO-FAZA KIMYOVIY BIRIKMALARNING SAMARADORLIGI · 2026 · DOI

  • There is a need to investigate the effect of Sesbania grandiflora leaf-based organic tablets on semen quality. The limited feed supply during the dry season can impair semen quality, and alternative strategies are needed.

    The Effect of Organic Tablet Supplementation Based on Sesbania Grandiflora Leaves on The Quality of Post-Thaw Kacang Buck Semen · 2026 · DOI

  • To investigate the effect of varying the concentration of CaCO3 on the biodegradability and mechanical properties of the bioplastik. To compare the bioplastik with conventional plastic in terms of biodegradability and mechanical properties.

    PEMBUATAN PLASTIK DEGRADABLE BERBAHAN DASAR PATI BENGKOANG DENGAN PENAMBAHAN CaCO3 SEBAGAI BAHAN PENGUAT · 2026 · DOI

  • The lack of studies on the use of kalsium karbonat and sorbitol as additives in bioplastik production. The need for a novel method for producing bioplastik from bengkoang starch with the addition of CaCO3 as a strengthening material.

    PEMBUATAN PLASTIK DEGRADABLE BERBAHAN DASAR PATI BENGKOANG DENGAN PENAMBAHAN CaCO3 SEBAGAI BAHAN PENGUAT · 2026 · DOI

  • There is limited research on the effects of kinesiotaping and vitamin B complex on lumbar disc herniation in third-trimester pregnant women. There is a need for further studies to evaluate the effectiveness of kinesiotaping and vitamin B complex in reducing discomfort and disability.

    PEMBERIAN TERAPI KINESIOTAPPING VERSUS VITAMIN B KOMPLEKS TERHADAP LUMBAR DISC HERNIATION PADA IBU HAMIL TRIMESTER III · 2026 · DOI

  • The production and purification of biologically active peptides are crucial for their application in the pharmaceutical industry. The development of new methods for producing and purifying biologically active peptides is necessary.

    BIOLOGIK FAOL PEPTIDLARNING OLINISHI, TOZALASH USULLARI VA FARMATSEVTIKADA QO'LLANILISHI · 2026 · DOI

  • The study only analyzed the effect of organic materials on the chemical and biological properties of Vertisol soil and did not consider other factors that may affect soil fertility. The study used a limited number of treatments and did not include a control group with no organic materials.

    Peningkatan Sifat Kimia dan Biologi Tanah Vertisol pada Budidaya Tebu Melalui Aplikasi Berbagai Jenis Bahan Organik · 2026 · DOI

  • There is limited research on the effect of different types and combinations of organic materials on the chemical and biological properties of Vertisol soil. The study aims to fill this gap by analyzing the effect of various organic materials on soil properties.

    Peningkatan Sifat Kimia dan Biologi Tanah Vertisol pada Budidaya Tebu Melalui Aplikasi Berbagai Jenis Bahan Organik · 2026 · DOI

  • The improper disposal of used cooking oil contributes to environmental pollution and water pollution. There is a need for community service programs that promote environmental awareness, appropriate technology utilization, and community empowerment.

    Empowerment Program on Natural Soap Production from Used Cooking Oil at Pimpinan Ranting ‘Aisyiyah Tamanan · 2026 · DOI

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48 open questions have been extracted from the limitations and future-work passages of 542 Natural Products and Applications papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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