L-Lysine monohydrochloride is a feed additive produced by fermentation using a genetically modified strain of Escherichia coli (CGMCC 7.57). The Panel on Additives and Products or Substances used in Animal Feed (FEEDAP Panel) of the EFSA, in its opinion on the safety and efficacy of the product, could not conclude on the safety of the product for target animals, consumers, users and the environment. The European Commission asked EFSA to deliver an opinion on the safety of L-lysine monohydrochloride as a nutritional additive for all animal species based on additional data submitted by the applicant on the characterisation of the additive. No recombinant antibiotic resistance genes are present in the production strain and therefore in the final product. The L-lysine monohydrochloride manufactured by fermentation using E. coli CGMCC 7.57 does not raise safety concerns for the target species, consumers, users and the environment with regard to the genetic modification of the production strain. The levels of endotoxins present in the product and its dusting potential indicate no health risk for the user.

Clerodendrum splendens (Lamiaceae) is a plant with therapeutic properties, traditionally used in several countries for the treatment of several diseases. The objective of this study was to evaluate the antioxidant and immunomodulatory activity of the total aqueous extract obtained from the leaves of C. splendens in order to contribute to a better knowledge of the therapeutic effects of this plant. It consisted in the realization of the antioxidant activity of ETAC according to the following methods: the DPPH test and the iron reducing power test (FRAP).    For the DPPH test, 50 µl of each of the different concentrations of the extract were incubated with 5 ml of a 0.004% methanolic solution of DPPH. After an incubation period of 30 minutes, the absorbances at 517 nm were recorded. The 50% inhibitory concentration of DPPH activity (IC50) expressed in µg/ml of each extract was calculated and compared with that of butylated hydroxytoluene (BHT) taken as the reference antioxidant. The Ferric Reducing/Antioxidant Power (FRAP) assay measures the reducing power of antioxidants in a mixture by their ability to reduce ferric tripyridyl-triazine (Fe3+ -TPTZ) to ferrous (Fe 2+-TPTZ) at acidic pH. 900 µl of the FRAP reagent, previously incubated at 37°C, was mixed with 70 µl of doubly distilled water and 30 µl of the sample (with appropriate dilutions). The increase in absorbance at 593 nm was then monitored for 30 minutes at 37 °C. A range of FeSO4.7H2O, a reducing standard, between 0 and 2000 µM was used to calculate the FRAP values of the extracts and the standard antioxidant (BHT). The results of the study showed that ETAC has a good free radical scavenging activity compared to the activity of BHT, which is a synthetic antioxidant used as a standard. Thirty-two (32) rats weighing between 150 and 200 grams on average were used for the immunomodulatory effect of ETAC. The rats were randomly divided into four (4) batches of eight (8) rats each according to their weight. Each batch consisted of four (4) male and four (4) female animals distributed in different bins according to sex. The control rats were each given 1 ml of distilled water daily by gavage for the 28-day treatment period. The three (3) test batches (batches 1; 2 and 3) received 125 mg/kg bw; 250 mg/kg bw and 500 mg/kg bw of ETAC by gavage daily for 28 days. ETAC significantly increased white blood cell and lymphocyte counts at 125 and 250 mg/kg bw. The increase was greatest at 250 mg/kg bw. Only at 250 mg/kg bw was there a significant increase in neutrophils. Histological sections showed no structural or functional abnormalities in the thymus and spleen.

l‐Tryptophan is a feed additive produced by fermentation using a genetically modified strain of Escherichia coli. The EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP Panel) issued an opinion on the safety and efficacy of the product, which concluded that ‘The use of l‐tryptophan produced by E. coli CGMCC 7.59 in feed is safe for non‐ruminant target species when supplemented to diets in appropriate amounts. As the metabolites of l‐tryptophan produced by ruminal bacteria may be toxic to the host animal, oral administration of unprotected l‐tryptophan to ruminants should be avoided. The Panel on Additives and Products or substances used in Animal Feed (FEEDAP) has concerns about the safety of l‐tryptophan for target species when administered via water for drinking… …In the absence of any data on sensitisation, the product should be considered a potential dermal sensitiser. The level of endotoxins present in the product and its dusting potential indicate a health risk for the user upon inhalation'. The European Commission asked EFSA to deliver an opinion on the safety of l‐tryptophan, produced by an improved manufacturing process, as a nutritional additive for all animal species based on additional data submitted by the applicant on characterisation of the additive. The FEEDAP Panel reiterates its concern on the use of unprotected tryptophan to ruminants and on the safety of the amino acid l‐tryptophan for target species when administered simultaneously via water for drinking. As the estimated maximum exposure to endotoxins by inhalation of the improved product is below the provisional occupational exposure limit, no risk from exposure to endotoxins for people handling the additive is expected. Concerns remain about possible dermal sensitisation.

Shea press cake is a subproduct of shea butter production. It generally serves as animal food or as fuel, in shea areas. This study demonstrated its ability as edible organic bank of bioactive molecules useful for human. Therefore, the hydroalcoholic extract was screened through GC-MS analysis, and antinutritional compounds were quantified. Chromatogram revealed a wide range of molecules belonging to various famillies. Hence, many amino acids involving EAA (Threonine, Valin and pre-tryptophan) were detected. Peaks related to organic acids like quinic, lactic, malic, citric, gluconic, galactaric, succinic and phosphoric acids were also identified. These acids would be widely exploited in either food or cosmeto-pharmaceutical, or in both industries. Also appeared on the chromatogram, peaks of oses (glucose, fructose and sucrose) and phenolic acids.  Phenolic acids consisted in various catechins and gallic acids which would have antioxidant, antimicrobial, antitumor, anticancer powers. Some other benefic molecules like glycerol and myo-inositol counted among the identified molecules. Above all, shea press cake contents in oxalates (564.66±49.60 mg/100 g DM) and phytates (148.45±0.03 mg/100 g DM) were at far, lower than those of many therapeutic teas. Thus, shea press cake might be considered as a valuable edible bank of bioactive molecules. It could be involved in cosmetics, in drugs and be recommended to consumption as teas leaves, coffee, cinnamon, etc. in prevention to diseases related to metabolic disturbances and oxidative stress (tumor, cancer and degenerative diseases).