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Lemongrass (Cymbopogon citratus) is a plant known to contain various bioactive compounds with potential antioxidant properties as well as xanthine oxidase (XO) inhibitory activity. This study aimed to evaluate the phytochemical content, antioxidant activity, and XO inhibitory potential of ethanol extracts from the leaves, stems, and their combination. Phytochemical screening revealed that all extracts contained alkaloids, flavonoids, and terpenoids, while phenolic compounds were detected only in the leaf extract and the combined leaf–stem extract. Antioxidant activity assays demonstrated that all extracts exhibited very strong antioxidant activity, with IC₅₀ values below 50 ppm, indicating a significant potential to scavenge free radicals. In the XO inhibition assay at a concentration of 200 ppm, the ethanol extract of lemongrass stems showed the highest inhibitory activity at 81.37%, followed by the leaf extract at 48.08% and the combined leaf–stem extract at 33.65%. Overall, these findings suggest that the ethanol extract of lemongrass stems is the most promising natural source of antioxidants and has the greatest ability to inhibit xanthine oxidase activity, indicating its potential development as a functional ingredient for health applications.

This study explores community social activities within the tradition of Wayang Golek performances as a form of living hadith in the city of Bogor. The Wayang Golek tradition reflects the practical implementation of the teachings of the Prophet Muhammad SAW in the daily lives of the Sundanese community. Using a qualitative approach, the study involved participant observation and in-depth interviews with puppeteers and audience members. The findings indicate that Wayang Golek performances function not only as cultural entertainment but also as an indirect medium for strengthening moral values, mutual cooperation, and Islamic preaching. Social activities surrounding the performances include communal interaction, preservation of local culture, and reinforcement of religious identity amid the challenges of modernization. The study further reveals that the concept of living hadith is embodied in wayang narratives that convey ethical messages aligned with the sunnah of the Prophet. These findings highlight the importance of revitalizing local cultural traditions as an effective medium for contemporary Islamic education and value transmission.

The increasing integration of digital technology into the daily lives of Generation Alpha has contributed to reduced physical activity, highlighting the need to understand the factors shaping children’s movement behaviors. This study employed a quantitative correlational approach to examine the relationship between parental educational background and the physical activity levels of students aged 13–15 at SMP 1 Waru Sidoarjo. Data were collected through a parental education questionnaire and the PAQ-C instrument, which assesses children’s physical activity over the past seven days. A total of 45 respondents participated, and the data were analyzed using Pearson or Spearman correlation tests, depending on distribution. The findings revealed a positive and statistically significant—though weak—association between parental education and children’s physical activity levels. Parents with higher education tend to promote more active lifestyles by regulating screen time, providing access to sports facilities, and modeling healthy behaviors. These results underscore the essential role of families in developing healthy routines among Generation Alpha and the need for educational initiatives to enhance parental awareness of physical activity in an increasingly digital environment.

This study aims to describe and analyze the activities taking place in the Rumah Adat Tinggi of Rengat as a reflection of the social and cultural identity of the Indragiri Hulu community. The research is motivated by the functional shift of traditional houses amid modernization, which threatens the continuity of local wisdom. This study employs a qualitative descriptive method. Data were collected through field observations, interviews with cultural figures and caretakers, and documentation of cultural events held in the traditional house. The findings indicate that the Rumah Adat Tinggi serves not only as a historical heritage but also as a social and cultural center for the community. Activities within it embody values such as mutual cooperation, deliberation, respect for ancestors, and cultural education for the younger generation. From the perspective of functionalism, the traditional house operates as a social system that maintains societal balance through social, cultural, and integrative functions. This research emphasizes the importance of revitalizing the Rumah Adat Tinggi to ensure its continued role as a living space for cultural transmission amid globalization.

The rapid development of artificial intelligence, particularly ChatGPT, has created new opportunities to support students’ academic activities in higher education. However, its utilization needs to be evaluated in terms of the alignment between academic task characteristics and technological capabilities to ensure optimal outcomes. This study aims to examine the feasibility of using ChatGPT in students’ academic activities by applying the Task–Technology Fit (TTF) model. This research employed a quantitative approach using Structural Equation Modeling based on Partial Least Squares (SEM-PLS). Data were collected through questionnaires distributed to university students and analyzed using SmartPLS 4 software. The variables examined included Task Characteristics, Technology Characteristics, Task–Technology Fit, Performance Impact, and Utilization. The results indicate that Task Characteristics and Technology Characteristics have a positive and significant effect on Task–Technology Fit. Furthermore, Task–Technology Fit significantly influences Performance Impact and Utilization. Performance Impact also shows a positive and significant effect on the utilization of ChatGPT by students. These findings suggest that the alignment between academic task requirements and the capabilities of ChatGPT plays a crucial role in improving students’ performance and encouraging sustained technology use. The implications of this study highlight the importance of selective and purposeful use of ChatGPT in higher education and provide a reference for higher education institutions in formulating policies related to the ethical and effective integration of artificial intelligence technologies as learning support tools.

Polusi udara partikulat halus (PM2,5) merupakan ancaman serius bagi kesehatan masyarakat di Kabupaten Brebes, Jawa Tengah. Faktor penyumbang utamanya adalah emisi kendaraan di jalur Pantura, aktivitas industri perikanan, serta konsentrasi tinggi selama musim kemarau (Juni–November). Tidak adanya model peramalan sub-jam yang akurat menghambat pengembangan sistem peringatan dini yang efektif. Penelitian ini mengembangkan dan mengevaluasi model deep learning berbasis Transformer untuk memprediksi konsentrasi PM2,5 dengan resolusi waktu 15 menit. Data yang digunakan berasal dari NASA GEOS-CF (band PM25_RH35_GCC) yang diakses melalui Google Earth Engine menggunakan API Python. Dataset mencakup periode 1 Januari hingga 22 November 2025, menghasilkan 7.813 observasi per jam, yang kemudian diinterpolasi linear menjadi 31.249 titik data dengan resolusi 15 menit. Arsitektur Transformer terdiri dari 3 lapis enkoder, 4 kepala perhatian multi-head, dimensi embedding 128, dimensi feed-forward 256, panjang sekuen 60 timestep, dan augmentasi fitur menggunakan rerata bergulir (*rolling mean*, jendela = 3) dan beda pertama (*first difference*). Pelatihan dilakukan dengan TensorFlow-Keras, pengoptimal Adam, penjadwal peluruhan kosinus (*cosine decay scheduler*), dan fungsi kerugian Huber. Pembagian data dilakukan secara kronologis: 70% pelatihan, 30% validasi. Evaluasi pada set uji independen (16 Agustus–21 November 2025, 9.357 observasi atau 97 hari 11 jam 15 menit) menghasilkan MAE 0,7691 µg/m³, RMSE 1,2052 µg/m³, R² 0,9945, dan *Explained Variance Score* 0,9948. Model ini mampu menggambarkan variasi diurnal dan anomali musiman secara akurat, jauh melampaui model LSTM dan GTWR konvensional. Penelitian ini memberikan kontribusi signifikan di bidang Teknologi Informasi melalui kerangka kerja pengolahan *big data* satelit untuk aplikasi lingkungan.

Hypertension is a non-communicable disease with a high prevalence in Indonesia, including in Tasikmalaya City, and shows a trend of increasing cases from year to year. This condition requires planned promotive and preventive efforts that involve community participation. This study aims to increase public knowledge about hypertension and the importance of physical activity as a preventive measure through the SERASI (Senam Raga Sehat, Cegah Hypertensi) program. The methods used include community-based health education, blood pressure checks, pre- and post-tests to measure changes in knowledge, and structured healthy exercise activities. The results showed a significant increase in knowledge after the intervention, reflected in the difference in pre- and post-test scores with a p value of 0.000 (p < 0.05). In addition, healthy exercise activities increased community participation and involvement, and encouraged the formation of sustainable physical activity habits. Overall, the SERASI program has proven effective in increasing community knowledge, awareness, and behavioral changes towards hypertension prevention, thus potentially supporting risk factor control and improving the quality of local community health. These findings are relevant for planning sustainable local and national community-based public health programs.

Aktivitas ekonomi mempunyai hubungan yang erat dengan transaksi antara entitas ekonomi, yang terkadang menyebabkan sengketa. Dalam konteks ekonomi syariah, sengketa muncul karena perselisihan antara pelaku ekonomi yang berbisnis berdasarkan hukum ekonomi syariah terkait hak atau kepentingan. Sengketa ini bisa diputus dengan instrumen hukum yang berbagai, baik litigasi di pengadilan agama maupun metode non-litigasi seperti negosiasi, mediasi, dan konsiliasi. Penyelesaian sengketa di pengadilan agama bertujuan agar terjaminlah keadilan dan keteguhan hukum sesuai prinsip syariah. Namun, dengan semakin meningkatnya tuntutan keadilan, penyelesaian sengketa melalui pengadilan relatif lama dan kurang efektif, maka alternatif penyelesaian di luar pengadilan semakin relevan. Negosiasi sebagai salah satu proses tawar-menawar dalam sengketa ekonomi syariah sangat memfokuskan pada persiapan dan komunikasi efektif kedua belah pihak. Salah satu penyebab sengketa ekonomi pada ekonomi syariah adalah wanprestasi dalam transaksi jual beli, terutama transaksi tanah. Oleh karena itu, regulasi ekonomi syariah yang mengatur prinsip keadilan dan keseimbangan hak dan kewajiban sangatlah perlu untuk menyelesaikan sengketa tersebut secara adil dan damai. Penelitian ini bertujuan untuk menggali penerapan regulasi ekonomi syariah dalam penyelesaian sengketa wanprestasi, khususnya yang berhubungan dengan sengketa tanah, dengan mengidentifikasi metode penyelesaian sengketa yang sesuai dalam hukum Islam dan hukum positif Indonesia. Penelitian ini diharapkan memberikan wawasan mengenai relevansi dan penerapan hukum Islam dalam menyelesaikan sengketa ekonomi syariah, serta menyoroti pentingnya penyelesaian sengketa melalui metode yang mengedepankan keadilan dan perdamaian.

Penelitian ini bertujuan untuk menganalisis perbandingan biaya dan durasi proyek sebelum dan sesudah penerapan metode crashing pada pembangunan Gedung Kenanga di Rumah Sakit Paru dr. Ario Wirawan (RSPAW) Kota Salatiga. Metode crashing dilakukan dengan mempercepat aktivitas pada lintasan kritis melalui penambahan sumber daya tanpa mengurangi kualitas pekerjaan. Berdasarkan hasil analisis, durasi proyek berkurang dari 150 hari menjadi 124 hari (efisiensi waktu sebesar 17%). Biaya langsung mengalami peningkatan sebesar 1,11%, sedangkan biaya tidak langsung menurun sebesar 17,33%. Secara keseluruhan, metode crashing menghasilkan penghematan total biaya proyek sebesar 0,74%. Temuan ini menunjukkan bahwa metode crashing dapat menjadi strategi efektif dalam percepatan proyek dengan pengendalian biaya yang optimal. Kata kunci: crashing, lintasan kritis, biaya proyek, durasi proyek, percepatan.

Penelitian ini mengembangkan sistem pemantauan berbasis Internet of Things (IoT) untuk mengoptimalkan kinerja Mini PC dan pemeliharaan real-time di CV Permata Gemilang Jaya. Metodologi waterfall diterapkan menggunakanNodeMCU sebagai mikrokontroler utama, dilengkapi dengan sensor DHT22, DS18B20, dan INA219 untuk memantau parameter suhu, CPU, dan memori. Arsitektur sistem mengintegrasikan kerangka kerja Laravel dengan database MySQL, menghasilkan aplikasi web responsif dengan kontrol akses berbasisperan untuk Admin Pusat, Admin Regional, dan Teknisi Cabang. Infrastrukturserver cloud dengan konektivitas GSM cadangan memfasilitasi pemantauanterpusat di wilayah Ciayumajakuning. Desain sistem menggunakan Unified Modeling Language (UML) dengan diagram kasus penggunaan dan diagram aktivitas yang komprehensif. Penerapan sistem pemberitahuan otomatisdengan mekanisme peringatan berbasis ambang batas memungkinkan deteksidini anomali perangkat. Antarmuka yang dioptimalkan untuk selulermeningkatkan aksesibilitas teknisi untuk operasi lapangan. Validasi sistemmenunjukkan strategi pemeliharaan preventif yang sukses dalam mengurangiwaktu henti perangkat dan mengoptimalkan efisiensi operasional infrastrukturteknologi informasi.

Latar Belakang: Hipertensi merupakan penyakit kronis yang prevalensinya tinggi pada kelompok lanjut usia serta berperan signifikan dalam timbulnya komplikasi kardiovaskular. Salah satu faktor risiko yang dapat dimodifikasi dalam penatalaksanaan hipertensi adalah rendahnya tingkat aktivitas fisik. Tujuan: untuk memberdayakan lansia dalam melakukan aktivitas fisik dalam menurunkan tekanan darah pada lansia dengan hipertensi. Metode: pelaksanaan pengabdian masyarakat berupa pembelian Latihan fisik pada lansia dengan tujuan menurunkan tekanan darah yang terdiri dari tahap I: sharing materi perihal pentingnya aktivitas fisik terhadap tekanan darah sebanyak 1 kali pertemuan dan tahap II berupa kegiatan pelatihan aktivitas fisik berupa senam lansia 1 hari seklai dilakukan selama 3 kali seminggu dan diukur tekanan darah sebelum dan sesudah kegiatan senam lansia. Hasil: kegiatan ini menghasilkan meningkatnya pengetahuan lansia perihal pentingnya aktivitas fisik berupa senam lansia terhadpa tekanan darah dan menurunnya tekanan darah pada lansia yang menderita hipertensi. Kesimpulan: lansia dengan hipertensi sudah mampu melakukan aktivitas fisik untuk menurunkan tekanan darah dan mempraktekkan senam lansia secara mandiri ataupun golongan (secara bersama-sama dengan lansia yang lain).

Diabetes mellitus adalah penyakit gangguan metabolisme yang disebabkan oleh defisiensi sekresi insulin, kerusakan sel Beta pankreas, atau resistensi insulin sebagai akibat insulin yang tidak digunakan. DM secara progresif menyebabkan terjadinya komplikasi makrovaskuler, mikrovaskuler, dan neuropatik kronis yang mengancam jiwa. Selain berdampak pada masalah kesehatan, DM juga memiliki konsekuensi ekonomi yang besar. Biaya pengobatan meningkat khususnya apabila terjadi komplikasi jangka panjang dan pilihan pengobatan modern. Perubahan gaya hidup dapat meningkatkan kesehatan dan kualitas hidup sehingga penderita tidak mengalami komplikasi. Modifikasi gaya hidup dilakukan dengan mengurangi asupan energi, meningkatkan aktivitas fisik sebagai terapi utama untuk pasien DM yang obesitas. Penurunan berat badan dikombinasikan dengan peningkatan aktivitas dapat meningkatkan sensitivitas insulin dan kontrol glikemik serta mencegah perkembangan DM tipe 2 terhadap risiko tinggi gangguan toleransi glukosa. Target pengabdian masyarakat ini adalah meningkatkan pengetahuan, dan kemampuan penderita diabetes mellitus tipe 2 dalam melakukan modifikasi gaya hidup guna mencegah komplikasi diabetes. Kegiatan  ini dilakukan di layanan kesehatan praktik mandiri bidan (LKPMB) dengan melibatkan mitra dari lahan yaitu bidan dan tim kesehatan terkait dalam bentuk pemberian edukasi dan pelatihan keterampilan mengenai cara melakukan menejemen gaya hidup. Hasil evaluasi menunjukkan pemahaman peserta menjadi lebih baik tentang modifikasi gaya hidup dan memiliki motivasi untuk diterapkan dalam kehidupan sehari-hari

Penelitian ini bertujuan merancang sistem informasi penjualan berbasis web untuk meningkatkan efektivitas pencatatan transaksi pada Toko Bangunan Subur Kaliwungu yang sebelumnya masih dilakukan secara manual. Permasalahan utama yang dihadapi meliputi pencatatan yang tidak efisien, kesulitan pencarian data, serta kurangnya ketepatan dalam laporan keuangan. Metode penelitian yang digunakan adalah kualitatif dengan pendekatan Research and Development (R&D) menggunakan model Prototype. Sistem dikembangkan dengan menerapkan metode akuntansi berbasis Akrual (Accrual Basis) agar laporan keuangan dapat disusun lebih akurat dan real time. Hasil penelitian menunjukkan bahwa sistem ini mampu mencatat transaksi penjualan dan pembelian, mengelola data barang dan pelanggan, serta menyajikan laporan penjualan dan laporan keuangan secara digital. Fitur tambahan seperti histori transaksi, informasi stok barang, serta perhitungan laba rugi juga membantu pemilik toko dalam pengambilan keputusan. Implementasi sistem memberikan dampak positif, di antaranya peningkatan efisiensi, keakuratan data, dan kemudahan monitoring aktivitas penjualan.

Ironing activities in the laundry service industry are performed repeatedly and for long periods, creating a high potential for non-ergonomic work postures. At Laundry Cio’ta, ironing is carried out every day from 08:00 to 21:00 by two workers, which increases the risk of fatigue and musculoskeletal disorders due to continuous and repetitive movements. This study aims to analyze workers’ ironing postures using the REBA method to determine the level of ergonomic risk. Data were collected through direct observation and measurement of body posture angles during the ironing process. The assessment results showed a Score A of 4 and a Score B of 2, producing an initial REBA score of 4. With the addition of an activity score of +1, considering the repetitive nature of the task, the final REBA score increased to 5. This score indicates a moderate level of risk, suggesting that corrective actions are necessary to prevent long-term strain or injury. Based on these findings, ergonomic improvements such as adjusting the ironing table height, modifying the work layout, and encouraging workers to adopt better posture are recommended. Implementing short rest breaks and task variation can also help reduce physical strain and improve worker comfort and productivity.

Kebutuhan akan angkutan umum berbasis rel berdampak luas terhadap pertumbuhan penduduk dan aktivitas ekonomi Jakarta. Penelitian ini bertujuan untuk membandingkan KRL Commuter Line dan MRT Jakarta dari dua aspek Kemampuan Membayar dan Kesediaan Membayar. Analisis ini dilakukan dengan pendekatan studi literatur deskriptif-komparatif. Jurnal, prosiding, tesis, dan dokumen kebijakan yang digunakan sebagai sumber sekunder melalui analisis konten. KRL dengan tarif dasar sebesar Rp. 3.000,- mendapatkan ATP Rp. 3.770,- – Rp. 4.825,- dan WTP Rp. 3.974,- – Rp. 5.057,-, yang berarti KRL berpotensi untuk perubahan tarif sebesar Rp. 770,-. MRT Jakarta untuk tarif sebesar Rp. 14.000,- untuk fase 2A, ATP menunjukkan daya beli Rp. 17.044,- dan WTP Rp. 19.000,-. Pola penumpang terikat muncul dan sangat bergantung, di sisi ujung, dengan WTP yang tinggi dan ATP yang rendah, untuk kedua moda, menandakan MRT dan KRL sangat efisien dan nyaman. Penelitian ini berpendapat agar penyesuaian tarif dilakukan dan untuk jangka panjang, tarif perlu diikuti dengan peningkatan mutu pelayanan dengan penyesuaian yang progresif dan sesuai dengan penghasilan bagi masyarakat berpendapatan menengah ke bawah, agar mutu pelayanan tidak berkualitas rendah.

The puring plant (Codiaeum variegatum), which has been known as an ornamental plant, apparently has significant therapeutic potential, supported by the presence of secondary metabolites such as flavonoids, tannins, saponins and alkaloids. Various modern studies report the biological activity of croton leaves, including anti-cholesterol, anti-hyperglycemia, antibacterial effects, and their use in biosurfactant formulations. However, studies on how varying extract concentrations influence bioactivity parameters quantitatively are still limited, especially in the context of dose-response relationships involving many biological parameters in one series of research. Therefore, this research was conducted to evaluate eight bioactivity parameters, namely PSM, SSSP, DSSP, SL, RO, SM, PSL, and ANA at croton leaf extract concentrations of 1%, 2%, and 4%. This research uses a laboratory experimental approach by extracting croton leaves through a maceration method using ethanol, then formulated in three concentration levels. Each parameter was analyzed quantitatively to observe the pattern of changes in biological response to variations in the dose administered. The results showed that most of the PSM, SSSP, DSSP, SL, and PSL parameters showed an optimum response at a concentration of 2%, which indicates that there is a most effective dose point before a decrease in activity occurs at the highest concentration. In contrast, several parameters such as RO, SM, and ANA showed a more fluctuating response, even the ANA parameter gave the highest value at a concentration of 4%, indicating that certain activities require higher compound levels to be achieved. In general, the response pattern found was not linear, but instead formed an optimum curve typical of the bioactivity of plant extracts. These findings confirm that determining dosage is very important in the use of croton leaf extract, both for pharmacological purposes and for the formulation of natural ingredient-based products.

This research is aimed at examining the operational strategies carried out by PT. Samudera Sarana Karunia Dumai in ensuring the smooth operation of the Mt. Meghna Trader ship at Pelindo Dumai Port. The main focus of the research is directed at the identification and assessment of the effectiveness of operational strategies which include the planning, implementation, and control stages of various activities such as loading and unloading, logistics, coordination with relevant parties at the port, and operational risk management. This research also includes consideration of external factors, including port regulations, market conditions, available infrastructure, and supply chain dynamics. In addition, this study emphasizes the importance of continuous performance evaluation to ensure that ship operations can run according to safety standards, time efficiency, and procedural accuracy. A qualitative approach with a case study design is used and reinforced by quantitative data to get a more comprehensive analytical picture. Data was obtained through in-depth interviews, direct observations in the field, review of operational documents, and surveys involving internal and external parties who play a role in supporting the operational process of ships at the port.

This study aims to analyze the relationship between online shopping activities and personal financial management among university students in Indonesia. The background of this research lies in the increasing digitalization of daily consumption, which has encouraged students to engage more actively in e-commerce transactions. Using a quantitative correlational design, data were collected from 100 undergraduate students through an online questionnaire based on Likert-scale indicators. The independent variables consist of buyer characteristics (age, gender, and income sources) and online shopping activities (frequency, spending amount, and shopping motivation). Meanwhile, personal financial management is measured through financial planning and spending control. The findings show that students demonstrate very high levels of online shopping activity and acknowledge the strong influence of demographic factors on their consumption behavior. Descriptive analysis also indicates high scores for financial planning and spending control, although intensive online shopping remains a potential risk to financial stability. The implications of this study highlight the need to strengthen financial literacy among students to help them develop healthier budgeting habits and reduce impulsive buying driven by digital platforms. This research is expected to contribute to the understanding of digital consumer behavior and support the development of financial education programs for young adults.

This study aims to improve early childhood learning activities by utilizing vacant land as a nature center at Aisyiyah Bustanul Athfal 50 Kindergarten, Surabaya. The underlying problem is the lack of variety in early childhood learning, which tends to be limited to the classroom and the suboptimal use of the surrounding environment as a learning resource. This study used a qualitative approach with the Classroom Action Research (CAR) method, conducted in two cycles. The subjects were 15 children in Group B, characterized by active learning but limited focus on learning and environmental exploration. Data were collected through observation, interviews, and documentation, while data validity was tested through triangulation of sources and techniques. The results showed that children's learning activities increased significantly after the implementation of nature-center-based learning. Children became more active, enthusiastic, and were able to interact better with their environment and peers. Activities such as planting, watering, observing insects, and maintaining garden cleanliness provided meaningful and enjoyable learning experiences. In addition, the utilization of vacant land was an effective solution in creating a contextual and child-friendly learning atmosphere. The environment around the school was optimally utilized as a learning medium appropriate to the development of early childhood. This study concluded that the nature center significantly contributed to increasing children's learning activities. Therefore, this nature-based learning model can be recommended as an innovation in early childhood learning for other educational units.

Thick leaf (Glochidion superbum) is a medicinal plant traditionally utilized by the community of East Panjang Island for the treatment of wounds, pain, and ulcers. This research was conducted to isolate the major compounds present in the ethyl acetate fraction of thick leaf and to assess its antioxidant activity using the DPPH method. The plant leaves were first cleaned, dried, and powdered, followed by maceration extraction using methanol, which resulted in an extract yield of 16.42%. The crude extract was fractionated by column chromatography using EtOAc and MeOH eluents with ratios of 9:1 (K1), 4:1 (K2), 1:4 (K3), and 1:9 (K4). UV–Vis spectrophotometric analysis showed an absorption peak at 288 nm, indicating the presence of phenolic compounds, identified as ferulic acid. Antioxidant testing using the DPPH method showed IC₅₀ values for fractions K1, K2, K3, and K4 of 12.981, 5.159, 9.658, and 10.971 µg/mL, respectively, with vitamin C as a positive control (3.563 µg/mL). Fraction K2 showed the strongest antioxidant activity. These results indicate that thick leaf contains ferulic acid with very strong antioxidant activity and has potential as a natural antioxidant source.