The efficacy of photoactivated curcumin in decontaminating food surfaces using a 465 nm light emitting diode (LED) light source was investigated. Under studied conditions, LED illumination alone had negligible antibacterial effects while photoactivated curcumin exhibited strong bactericidal activities against Escherichia coli. Minimum inhibitory concentration of photosensitized curcumin against E. coli on nutrient agar surface at a concentration of 1.5 × 105 cfu/cm2 was estimated to be 1.60 × 10−3 M, combined with irradiation of 27.2 J/cm2 at 465 nm. Bacterial inactivation kinetics could be described by a Weibull model (R2 = 0.979–0.999, RMSE = 0.019–0.229). When the treatment was applied on grape surface, the efficiency was lower as compared to that on the agar surface. Photoactivation enhanced quality retention of the samples during storage with significant preservation of vitamin C, color, texture, and reduction of weight losses. Practical applications The study provides an alternative method for food surface decontamination. Inactivation of pathogens and spoilage microorganism by combined visible LED light source and natural photosensitizers minimizes the adverse processing effects on organoleptic and physicochemical quality of the treated foods. The approach could be further optimized, scaled up, and applied in food industries.

Tomatoes flesh texture is tender, l eading to mussy texture when cooked and immersed in sugar solution during the sweets processing. Therefore, this research used calcium hydroxide (Ca(OH)2) to aid the proper texture formation of tomatoes sweets during processing. The aim of this research was to observe the proper concentration of Ca(OH)2 and duration of immersion according to the quality and sensorial properties of tomatoes sweets. The experimental design used was Completely Randomized Design with two factors, i.e. Ca(OH)2 concentrations (5, 10, and 15 % (w/v)) and immersion duration (2, 6, 12, and 24 hours). Each treatment was done in three replications. Moisture content, vitamin C, total acid, texture and sensorial parameter test was evaluated. The research results showed significant difference between the Ca(OH)2 and immersion duration treatments. Moisture content and texture score increased along with the addition of Ca(OH)2 concentration and immersion duration, but it had negative correlation with vitamin C and total acid content. The tomatoes sweets treated with 15% Ca(OH)2 and immersion duration of 2 hours was the most preferred by panelists. The best treatment of tomatoes sweets from the sensory perspective contained 46.64% moisture content, 52.99 mg/100g vitamin C, 1.26% total acid, and 2.3 kg/cm2 texture score.

Recently, metabolomics has grown rapidly in the fields of food and agriculture. Complex physiological changes after harvest prompted the development of a new metabolomic analytical method offering more profound insight into these changes. This review presents the feasibility of a metabolomics approach to elucidate physiological changes during ripening, senescence, and disorders. Additionally, we introduce metabolomics for the authentication of agricultural products. Confirmation of species, varieties, and geographical origin via metabolomics can be useful to tackle adulteration and certify quality.

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Coffee attracts consumers worldwide for its unique sensorial properties. Its unique flavor is affected by numerous factors. The biochemical properties associated with geographical features are among the essential aspects that may modulate coffee's distinct sensorial profiles, and may be employed for its origin determination and authentication. This systematic literature review served to assess the newest techniques for coffee authentication, origin determination, and adulteration detection from analytical and nondestructive approaches. This study focused on the last 10 years' high-quality research in the field. Accordingly, 78 articles using both analytical and nondestructive methods for the determination of coffee origin and fraud detection were found in leading journal databases. Apart from the compound profile and instrumentation, data analyses including statistics, machine learning, and multivariate models which have been commonly used are discussed as well. In addition, other important information, such as data validation methods and the predictive capability of the above techniques are also reflected in this review.

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<p class="abstrak2">Defaunation agents and molasses combination indicate able to improve digestibility of feed. This study was conducted to assest productivity of Bali Cattle fed ration supplemented with molasses solution containing several types of defaunation agents (moladef). Twenty Bali Cattle with average body weight of 307.56±52.46 kg were used in this research for six months. This study was arranged in a completely randomized design with four treatments and five replications. The treatments were P1 : Napier grass+pollard 1. 5 kg/head/day, P2 : napier grass + pollard 1. 5 kg/head/day + Hibiscus tiliaceus moladef 10 cc/head/day, P3 : napier grass + pollard 1. 5 kg/head/day + Hibiscus rosasinensis moladef, P4 : napier grass + pollard 1. 5 kg/head/day + Aloe vera moladef 10 cc/head/day . The parameters observed were average daily gain (ADG), feed intake, feed conversion ratio (FCR) and feed digestibility. This study suggest that the best average daily gain (ADG) was found in treatment P2 is 543,13 g/head/day. Treatment P2 also showed highest dry matter digestibility and crude fiber digestibility was 81,36% and 73,85%.  It is concluded that Bali Cattle fed on napier grass + pollard 1. 5 kg/head/day + Hibiscus tiliaceus moladef 10 cc/head/day resulted in the highest ADG and CF digestibility.</p>