Natural pigments, or natural colorants, are frequently utilized in the food industry due to their diverse functional and nutritional attributes. Beyond their color properties, these pigments possess several biological activities, including antioxidant, anti-inflammatory, anticancer, antibacterial, and neuroprotective effects, as well as benefits for eye health. This review aims to provide a timely overview of the potential of natural pigments in the pharmaceutical, medical, and food industries. Special emphasis is placed on emerging technologies for natural pigment extraction (thermal technologies, non-thermal technologies, and supercritical fluid extraction), their pharmacological effects, and their potential application in intelligent food packaging and as food colorants. Natural pigments show several pharmaceutical prospects. For example, delphinidin (30 µM) significantly inhibited the growth of three cancer cell lines (B16-F10, EO771, and RM1) by at least 90% after 48 h. Furthermore, as an antioxidant agent, fucoxanthin at the highest concentration (50 μg/mL) significantly increased the ratio of glutathione to glutathione disulfide (p < 0.05). In the food industry, natural pigments have been used to improve the nutritional value of food without significantly altering the sensory experience. Moreover, the use of natural pH-sensitive pigments as food freshness indicators in intelligent food packaging is a cutting-edge technological advancement. This innovation could provide useful information to consumers, increase shelf life, and assist in evaluating the quality of packaged food by observing color variations over time. However, the use of natural pigments presents certain challenges, particularly regarding their stability and higher production costs compared to synthetic pigments. This situation underscores the need for further investigation into alternative pigment sources and improved stabilization methods. The instability of these natural pigments emphasizes their tendency to degrade and change color when exposed to various external conditions, including light, oxygen, temperature fluctuations, pH levels, and interactions with other substances in the food matrix.

Circadian rhythms are internal mechanisms that regulate various aspects of the human body's physiology and behaviour that are influenced by activity, physicality, and change time in 24 hours. This study aims to compare oxidant levels and hormonal levels based on differences in training times, namely morning and evening, in badminton athletes. This research involved 44 badminton athletes using a purposive sampling technique who were divided into a morning group (n = 22) and an evening group (n = 22). Melatonin levels were measured using the Elabscience Kit (No. E-EL-H2016) and malondialdehyde (MDA) levels using spectrophotometry. All research procedures have received ethical approval from the Hasanuddin University Medical Faculty Ethics Commission (Number: 377/UN4.6.4.5.31/PP36/2023). The results of this study indicate that the athlete's melatonin value in the morning was 76.71 ± (29.05-247.45) higher than in the evening 80.43 ± (50.83-155.24) Meanwhile, the athlete's MDA value in the evening was 2.08 ± (0.74–4.57) higher compared to the MDA in the morning of 1.09 ± (0.33–3.71). Meanwhile, based on the insomnia value for evening training, a higher value was obtained compared to morning training, namely 9.50 ± (3-11). However, there was no significant difference in stress levels. The results of the study showed that badminton athletes who trained at night tended to experience sleep disturbances (insomnia) and increased oxidant levels, while hormonal levels, especially melatonin, were higher in athletes who trained in the morning.

Honey is a sweet substance produced by honey bees from the nectar of flowers or other parts of plants. Honey obtained from Bone, in South Sulawesi, has been extracted and tested for antibacterial activity and toxicity. Honey was macerated with methanol to obtain a crude extract. Methanol crude extract was then partitioned successively with n-hexane and ethyl acetate to obtain ethyl acetate and methanol fraction. Antibacterial activity test was performed by agar diffusion method against Escherichia coli and Staphylococcus aureus. Methanol extract, ethyl acetate fraction, and methanol fraction showed an inhibition zone against E. coli at 10.10, 10.05, and 8.40 mm, respectively with amoxicillin as a positive control (20.05 mm). Also against S. aureus, inhibition zone was obtained at 11.90, 9.30, 8.60, and 13.70 mm for methanol extract, ethyl acetate fraction, methanol fraction, and amoxicillin, respectively. The greatest inhibition zone was obtained from methanol extract against E. coli and S. aureus, both including the strong category. The LC50 value of methanol extract and methanol fraction was 273.57 µg/ml and 765.66 µg/ml, respectively, categorized as toxic against Artemia salina, while ethyl acetate fraction was not toxic.

One of the successful determinants of active compounds extraction from plant material depends mainly on the extraction procedures, including the type of solvents, plant materials, and extraction techniques used in the extraction procedure. This research aimed to optimize Pagoda's extraction yields (Clerodendrum paniculatum L.) using several types of solvents and extraction techniques and to evaluate the cytotoxic activity of extracts obtained. The various solvents include water, methanol, hexane, and ethanol, while the extraction techniques used were maceration, microwave-assisted extraction (MAE), and reflux. The flowers, leaves, and stems were also extracted to represent parts of the plants. Screening of secondary metabolites was carried out using thin-layer chromatography (TLC), while cytotoxic activity was tested against Artemia salina. The highest yield of extract was obtained using water, followed by methanol ethanol > hexane. The most effective extraction methods were the reflux method, followed by MAE and maceration. Analysis of variance (ANOVA) showed that the linear model of plant parts, solvents, and interactions between factors showed significant effects on yield (P < 0.05). The studied extracts contain secondary metabolites of terpenoids, flavonoids, alkaloids, and tannins. These extracts were also very toxic to Artemia salina; therefore, they can be developed as anticancer.

Essential oils (EOs) are volatile and concentrated liquids extracted from different parts of plants. Bioactive compounds found in EOs, especially terpenes and terpenoids possess a wide range of biological activities including anticancer, antimicrobial, anti-inflammatory, antioxidant, and antiallergic. Available literature confirms that EOs exhibit antimicrobial and food preservative properties that are considered as a real potential application in food industry. Hence, the purpose of this review is to present an overview of current knowledge of EOs for application in pharmaceutical and medical industries as well as their potential as food preservatives in food industry.

Background: Plectranthus scutellarioides is one of medicinal plants in Indonesia, which has several hundred varieties but only one is known by local people as medicine. Objective: Six varieties of Plectranthus scutellarioides were analyzed for their total flavonoid content, chemical compound, and moleculer genetic. Methods: TFCs were analyzed using AlCl3 colorimetric method, chemical compounds were identified using TLC-scanning densitometer, GC-MS, and FTIR, moleculer genetic were observed using DNA barcoding rbcL gene. Results: The TFCs of trailing psycholeus, and flamingo varieties were higher than the other varieties. TLC-scanner densitometer showed that color blaze dark star, trailing psycholeus, and trailing queen had similar profiles, as did beale street, trailing rose, and flamingo. The GCMS results showed notable difference in trailing psycholeus and trailing queen which have 2-oleoylglycerol and 9(E),11(E)-conjugated linoleic acid in larger amounts than others, respectively. Multivariate analysis of the FTIR spectra showed the closeness of all varieties, except for beale street which had the lowest similarity with the others. Despite that, genetic studies using the rbcL gene and comparing the results with the P. scutellarioides gene in the database (MW538954.1) showed beale street was the most similar (99.52%). The phylogenetic analysis showed that beale street and trailing psycholeus have the highest similarity among others. Conclusions: There is a slight difference in chemical composition between varieties as well as the genetic. Therefore, quality control or standardisation is needed in the use of this plant as a traditional medicine.

Plectranthus scutellarioides is one of medicinal plants in Indonesia, traditionally known as iler/miana/jawer kotok. Due to a large number of varieties, certain varieties of P. scutellarioides have not been extensively studied. This study focused on the isolations of two phytosterols, stigmasterol and β -sitosterol, which were characterized by various 1D and 2D NMR analyses, from the ethyl acetate extract of P. scutellarioides var. color blaze dark star . Cytotoxicity of the ethyl acetate extract and some selected fractions were evaluated against A549, MDA-MB-231, MCF-7, KB, and KB-Vin cell lines using SRB (Sulforhodamine B) method. Among all tested sample, fractions 15 and 17 have significantly inhibited cell growth with IC 50 of 14.3-24.3 µg/mL and 7.3-14.1 µg/mL, respectively.

Plectranthus scutellarioides have more than 173 varieties that can be distinguished from leaves foliage. Each variety produces certain second metabolite. Among all varieties, color blaze dark star was the one commonly used in Indonesia as traditional medicine. Optimization extraction process, qualitative phytochemical analysis, and preliminary assessment of toxicity of color blaze dark star and trailing queen variety of Plectranthus scutellarioides were investigated. Extraction process in color blaze dark star variety using Microwave assisted extraction show the highest %yield of extract but in trailing queen variety the highest %yield of extract was obtained from soxhletation method. Qualitative phytochemical analysis using thin layer chromatography from methanol, ethanol, and water extract with all method of extraction showed that both of varieties of Plectranthus scutellarioides contain alkaloid, flavonoid, tannin, and phenol. The highest toxicity with LC50 39 µg/ml was showed from ethanol extract using microwave assisted extraction of color blaze dark star variety.